rAmCharts4: JavaScript Visualization using 'amcharts4' Library

amCharts 4 Changelog

The format is based on Keep a Changelog.

Please note, that this project, while following numbering syntax, it DOES NOT adhere to Semantic Versioning rules.

linkWithStrength added to ForceDirectedSeries.
linkWith(node, strength) method added to ForceDirectedNode. Allows adding links without revalidating whole data.
unlinkWith(node) method added to ForceDirectedNode.
expandAll property added to ForceDirectedNode (default: true). If set to false, only a single level of children will be expanded on click/tap.

Links created using linkWith data field were not using any strength setting, affecting the layout.
Some problems with maxLevels on ForceDirectedSeries solved.

Export: Children columns on hierarchical charts (TreeMap, Sunburst, ForceDirectedTree) are no longer exported to "flat" formats (CSV, XLSX).

keepTargetHover was hiding tooltip when transiting hover from one Sprite to another.
Firefox was not displaying texts along paths on a page with base href set, due to Firefox bug.
SunburstSeries with 0 values were producing a JS error.
Width (or height if vertical) of Scrollbar/Slider was always 100%, even if it was set to less than 100%.
WordCloud with long labels that did not fit into container could get into infinite loop and never get drawn.
If a lot of GaugeChart instances with axis bands were rendered on a single page, stack owerflow error could happen.
Adding data to a chart with XYChartScrollbar and series in the scrollbar forced full-redraw of scrollbar chart which was making it blink.
Z-indexing of ColumnSeries3D columns was incorrect in some cases.
Tooltip of a 3D slice was not in the center of a slice.
Changing of Series' name was not propagating to legend.

Vertical/horizontal bullet positions on ColumnSeries were broken since 4.4.5.

Exporting chart data to JSON format now respects dataFields setting.

Setting showSystemTooltip = false on a Scrollbar now correctly disables tooltips on its thumb and grips.
When data for ForceDirectedSeries was changed for the second time, the old links remained visible.
Initial scatter of ForceDirectedSeries nodes reduced. Results in a better initial animation.
Adding data using addData() method to a chart with XYChartScrollbar was resulting data to be added twice.
With some special combination of axes config XYChart sometimes could fall into infinite loop.
Some JS error when converting coordinates out of bounds of AlbersUSA projection fixed.
Tooltip bounds were not being copied when cloning a Tooltip.

When data for ForceDirectedSeries was changed the old links remained visible.
Legend with custom data was causing a JS error.
Changing data during rangechangeended with skipEmptyPeriods enabled was triggering "Cannot read property 'getTime[ of undefined" exception.
Slices of SunburstSeries, and columns of TreeMapSeries were not taking propertyFields/configField from data.

Regression plugin: two new settings - simplify (simplifies output data for faster performance) and reorder (orders data in a horizontal linear fashion for scatter plots).
arrangestarted, arrangeended, and arrangeprogress events added to WordCloudSeries. Allows showing preloader while building the chart.

keepSelection behavior extended. Now it will keep ValueAxis selection while scrolling a perpendicular DateAxis or CategoryAxis.

Regression plugin: fixed issue with gaps in data.
Panning chart with CategoryAxis out of range, the axis could pan back with one less category in the range when released.
In some cases labels with bent = true on AxisLabelCircular were positioned incorrectly on RadarChart's Axis ranges.
Safari was not displaying base grid of Y axis in some cases.
Chart could freeze if there was a very small difference between minimum and maximum values of ValueAxis (less than 0.00000001).
If WordCloud was hidden while arranging words, and then unhidden, the words would overlap in some cases. Arranging of words now stops if container is hidden during the process and resumes when it is unhidden.
3D columns were cut off on IE if the size of Chart container changed after the chart was already build.
In some setups with <base href> some elements were being drawn incorrectly.

New property for Label: baseLineRatio (default -0.27) controls how "base line" for a label is calculated, and affects positioning of text. The default might not work for all fonts, so this setting can be used to adjust it for precise positioning.
New event for Sprite: "dragged". It kicks in right after "drag" and can be used to manipulate or correct element's position, which might not be possible using "drag" which has built-in position-altering handlers.

Export to SVG was not working on Firefox.
Some touch issues wit iOS Safari fixed.
ValueAxis could display non-rounded numbers (caused by floating point problem) sometimes.
maxPanOut of MapChart was being ignored.
Chart scrollbar was not being zoomed out when data of a chart changed.
RadarChart with multiple RadarColumnSeries with Y as base axis was displaying columns of a 2nd+ series from wrong position.
chart.dispose() with a lot of data was very slow. Now it's super fast.
Zoom with mouse wheel was buggy when zooming already zoomed-in XYChart.
Gant chart was not updating columns when chart.invalidateRawData() was called.
Issue with some propertyFields set on a LineSeries with no data fixed.
Reseting relativeRotation of AxisLabelCircular to undefined didn't work.

Now when using CSVParsing for parsing external data, skipRows will kick in first, removing X rows from the beginning of data, then useColumnNames will use the first row of what's left.

JSON: Specifying language locale as string (i.e. "fr_FR") now works in JS setups, provided appropriate language file is loaded.
Grab/Grabbing cursor was not appearing on Scrollbars on Firefox.
MapChart used to pan itself when it was zoomed in, tapToActivate enabled, and was tapped.
Hovering mouse cursor over an XYChart while it was initializing could sometimes result in a JS error.
Issue with DateAxis and Series not having dates at certain data items fixed. It was cousing problems with multiple date axes mostly.

Charts now have new property - tapToActivate (default: false). If set to true it will not react to touch drag gestures until user taps on the chart. More info.
New element on charts: dragGrip. It's a grip that, when enabled, will allow scrolling the page even if the chart functionality does not permit it, e.g. with chart cursor or MapChart. More info.

NumberFormatter in charts was ignoring locale settings.
TreeMap could crash across data update.
In some situations XYCursor with "panX" behavior would not allow panning the chart completely to the edge of data.

startendchanged event added to Component. Fired when start or end is changed. Unlike startchanged/endchanged this event is fired not immediately but at the end of a cycle.

Sunburst chart's defaalt radius set to 95%.

TreeMap could produce a JS error if data was changed during interaction with the map.
If Component.addData() called before chart was initialized, error happened.
3D columns with reversed base axis had wrong z-indexes.
DateAxis-based chart with single data item got into infinite loop if startLocation and endLocation were set to 0.5 or strictMinMax was set to true.
Tooltips of series could overlap if series used different DateAxis axes.
Chart with multiple DateAxis and no animated theme was not properly zooming with scrollbar.
Implemented a workaround for MSIE which was not updating series masks on chart resize.
Disposing XYCursor will now remove series/axes tooltips that might be currently displayed because of it.

New SliceGrouper setting: syncLegend (default false). If set to true the legend will be updated dynamically to show only those slices that are currently visible.
Plugin Regression: new property result will store all the results including formula and caculated points.
Plugin Regression: plugin now has events which can be used to attach event handlers such as "processed".

Animation was failing when source value was string (i.e. "auto") and target value was number (i.e. 10).
JSON: Object entries in a List were not being their properties set.
MapChart sometimes could place Map images at incorrect positions.

Using propertyFields.url was forcing pointer cursor on all objects from the same template, even if they did not have url set.
Memory leak with dynamic changes of data on TreeMap.
getPoint() method of XYSeries is now public.
Setting startAngle/endAngle before adding PieSeries was causing it to not be drawn.
Performance tweaks to 3D columns.

Series' bullets now accepts objects that are simple Sprite elements, not just Bullet types. This means you can add Circle as bullet (or any other element), to dramatically improve performance on bullet-heavy charts.
Default value of hideOversized for LabelBullet changed to false.

Dramatically improved performace of CategoryAxis.
SliceGrouper plugin will now not add "Other" slice if there are no slices below threshold or no data at all.
SliceGrouper now supports dynamic data updates.
ColorSet.reuse = true was working incorrectly for PercentSeries.
timezoneOffset property of the Date Formatter was causing all minutes to be formatted as zeroes.

New plugin: SliceGrouper (allows automatically grouping small slices on any PercentSeries, e.g. Pie, Funnel, Pyramid, or Pictorial Stacked). More info.

Changed centerStrength default was changed to 0.8 in ForceDirectedSeries.

Zero-value 3D columns were not visible on DateAxis.
FunnelSeries'' labels were out of bounds sometimes.
Regression plugin was not working when data was set directly on Series.

Corner radius is not supported anymore on 3D slices. A sacrifice towards performance.

Performance of PieChart3D improved dramatically.

ForedDirectedSeries properties minRadius and maxRadius can now be set in Percent.

Default value of ForceDirectedLink.strength changed to 1 to avoid initial shaking.
Default value of ForceDirectedSeries.manyBodyStrength changed to -15.
Default values of ForceDirectedSeries properties minRadius and maxRadius changed to 1% and 8% respectively.

In ForedDirectedSeries the same color was being reused for top-level node and first child node.
It was impossible to set colors of ForedDirectedSeries data items via data.
ColorSet setting reuse = true was acting incorrectly.

New chart type plugin: ForceDirectedTree. More info. Also check bundled examples: force-directed-tree, force-directed-tree-expandable, and force-directed-network.
New CategoryAxis property: positionToCategory(position).

TreeMap was erroring out since 4.3.6 unless "animated" theme was enabled.
On TreeMap's legend with default markers valueLabels was not working on first load.

New DateFormatter property: timezoneOffset. Set it to a number of minutes (to UTC) to recalculate all date/time to a specific time zone.

DateFormatter will now use locale information for its default date format set in dateFormat. Format in default "International English" locale did not change, and remains at "yyyy-MM-dd". Other locales might or might not produce different date formats.
Improved ValueAxis scale calculation algorithm when min/max is set.
"hit" event is now added on FlowDiagramNode template instead of the class itself. This allows disabling default toggle/drag behavior and replacing with own events.

Themes were not properly being applied to bullets.
Popup.draggable was being ignored.
Series.legendSettings.itemValueText was being ignored when cursorTooltipEnabled = false. #1141
Mouse events over LineSeries segments where happening at wrong position.
legend.valueLabels on TreeMap did not work.
Changing Map projection with panBehavior = "rotateLongLat" could cause a JS error.
Changing TreeMap data after chart size changed could cause zoom-out button to appear.
Solved flickering of stacked columns when raw data was invalidated.
Updating data of a TreeMap when animation was playing could result in a JS error.

New properties strokeLinejoin ("miter" | "round" | "bevel") and strokeLinecap ("butt" | "square" | "round") added to Sprite. More info.

In some rare cases EDGE/IE could generate an "Unspecied error".
MapChart method zoomToMapObject() was not functioning properly since 4.3.4.
LineSeries with bullet and hidden = false in init was causing the whole chart to break.

Issue with JSON setups for MapChart fixed.

MapPolygonSeries.geodataSource was not working.
MapChart was not showing data if geodata was set later than data on series.
When there were multiple data items with identical timestamps on DateAxis, the first ones could have been ignored.
Even if legend.itemContainer.template.togglable was set to false, Legend item was stil togglable.
Extra graticules (grid) was shown in GraticuleSeries unders some conditions.
Tooltips on a logarithmic ValueAxis were showing wrong values.
Value label for "0" could sometimes appear on top of logarithmic ValueAxis.
MapChart position was not correct if padding was set.

MapChart dispose error fixed.

Bug with live data updates fixed.

MapChart can now use any projection supported by d3-geo. Projection.d3Projection property added and you can set any d3-geo projection using it, like: mapChart.projection.d3Projection = am4maps.d3geo.geoConicEquidistant();.
Albers, AlbersUsa, AzimuthalEqualArea, EqualEarth, NaturalEarth1, Stereographic projection classes added (use them regularly like: mapChart.projection = new EqualEarth()).
deltaLatitude, deltaGamma added to MapChart. Together with already existing deltaLongitude allows rotating maps in any possible direction.
panBehavior property added to MapChart. Values: "move" (default), "rotateLat", "rotateLong", "rotateLongLat". Indicate what should happen when map is dragged.
ignoreBounds added to MapSeries. Specifies if this series must be included when calculating bounds of the map.
calculateVisualCenter added to MapPolygonSeries. Specifies if map polygons should calculate their visual center. Visual center is good for placing labels.
visualLongitude and visualLatitude getters added to MapPolygon. They return coordinates if calculateVisualCenter of series is set to true. You can also set them manually.
getCircle() and getBackground() methods added to MapUtils.
Graticule and GraticuleSeries classed added. Those allow creating graticules (map grid).
backgroundSeries added to MapChart. Allows creating a map-shaped background fill.

Engine behind rendering of maps was changed to use d3-geo.While the change should be backwards compatible, beware of and report any issues.
day-night-map and morphing-countries demos we changed to work properly with new version.
When adding a HeatLegend to MapChart its valign = "bottom" is no longer set by default. Set it explicitly if you need legend to bottom-aligned.

rtl setting was not being inherited properly.
Fixed RTL behavior for labels.
Disposing a hovered chart with scroll pan enabled used to leave whole document with disabled wheel scroll.

CategoryAxis was breaking down after dynamic data update since 4.2.4.

New property minPolylinestep added to global am4core.options. Setting to bigger value (default: 0.5) allows simplification of multi-point lines.
Export: new setting useSimplifiedExport (default: true). Setting to false will force use of external library (canvg) for all exports.

XYCursor with pan behavior used to remain in "grabbing" mode after click on zoom out button.
Export: Menu was not working properly on Mobile Safari.
Export: Menu was not working properly on Android Chrome.
Export: Exporting of PDF/XSLX is now supported on Mobile Safari.
Export: Exporting images in IE9 was broken.
Stacks with pre-hidden series were showing incorrectly.
DateAxis no longer ignores renderer.tooltipLocation.

autoGapCount added to LineSeries. If connect = false and distance between two data points is bigger than baseInterval * autoGapCount, a line will break automatically.

IPlugin now accepts Optional<Sprite>.
XYCursor will not longer obstruct page scroll if its behavior is set to "none".
JSON config: setting geodata by name (e.g. "worldLow") directly in MapSeries was not working.
JSON config: Instantiating new ColorSet objects was not working properly.
DateFormatter was not parsing dates like "20180101" (no separators) correctly.
An issue with DateAxis and milliseconds fixed.
dataItem.locations.dateX on LineSeries was not working properly.

Exporting via API from a chart that did not have ExportMenu set, was resulting in error.
Fixed tooltip flickering that were set directly on series objects (columns/bullets).
Because of daylight saving, sometimes DateAxis could mistake yearly data for monthly data if baseInterval was not set explicitly.
Sometimes Sankey nodes did not perfectly fit into chart area.
Tick location on Y axis was being ignored.
Ticks were positioned incorrectly when multiple axes were on the same side of the XYChart.
Issue with strictMinMax and single data item fixed.
valueY (or any other value) wasn't working in legendSettings.itemLabelText.

cursorHoverEnabled added to XYSeries. Controls whether to trigger hover state on columns/bullets of the all series under hovered category/date.
A new plugins property on all Sprite. More info.
New plugin: Regression. More info.
New ExportMenu setting: closeOnClick (default true). Will force export menu to close when export is initiated.

DateFormat will now parse even partial dates, e.g. format "yyyy-MM-dd" will parse "2018" correctly, and will assume Jan 1st.

Export: getImage()/getSVG() will now correctly omit exportable = false elements.
Export: Data export was not taking in additional columns after data updates.
Some chart cloning issues fixed.
Inccorrect behavior of Series' tooltip with minBulletDistance set fixed.
Sometimes, when series had only one data item, chart used to zoom-in right after the init.
In-line date formatting will now use DateFormatter's parsing functions for string-based dates.
DateAxis issues with certain timezones fixed.

Various graphical issues when using <base> tag (mostly affects Angular).
NumberFormatter did not have a public accessor to set negativeBase.

Added read-only property of CategoryAxis: frequency. Indicates every X label is shown.
Added JSON example of Candle stick chart (json/candlestick-series).
New Export property: extraSprites. May contain a list of references to other Sprites (e.g. external legend or even other chart) to attach to exported image. More info.
Experimental responsive features and default rules are now active. More info.

Accessibility: Default role of the Legend's item containers was changed to "switch".

Accessibility: Legend's containers when toggling items were setting value of aria-checked incorrectly.

Hiding or showing an element will now automatically set its readerHidden attribute accordingly.

JSON: Using children with an array value was duplicating elements.
Working around a bug with Angular's dead code elimination in --prod mode.
Fixed ValueAxis issue with animation when there's only single data item.

New Tooltip proprety: keepTargetHover - will make target element hovered as long as its tooltip is hovered, good for bullets and map images.
New Tooltip proprety: targetSprite - contains reference to element this tooltip is displayed for, if any.
New PictorialStackedSeries properties: startLocation and endLocation - allow setting relative start and end positions of the shape to fill.
New FunnelSeries/PyramidSeries/PictorialStackedSeries property: labelsOpposite - allows controlling which side of the series to show labels when alignLabels = true.

Sometimes axis ticks on a chart with a lot of data/series were not positioned properly.

On MapPolygon default value of nonScalingStroke is now set to true (as false).
When calculating font size for a word on a WordCloud chart it now uses smaller side of the series area instead of height.
Tooltip's label paddingBottom default value changed from 6 to 4 pixels for better centering of text.

Sometimes baseInterval = "year" on a DateAxis could cause stack overflow.

Default value of minFontSize in WordCloudSeries to 2%.
Default value of maxFontSize in WordCloudSeries to 20%.
Label sizing algorithm updated in WordCloudSeries.

New chart type: WordCloud.

Rotated axis labels (rotation != 0) of the vertical and horizontal axes no longer have their verticalCenter and horizontalCenter overridden by renderer. This gives more freedom for positioning rotated labels.

exportable = false was not working when set on various Series item templates.
On Gantt chart date axis tooltip was snapping randomly when moving mouse.
Export: For very large data sets (2MB and up) data export was failing silently in Chrome.

New Sprite property: baseSprite. On objects, even deep in hierarchy it will contain a reference to the main chart object.

Axis min/max calculation algorightm updated.

On a chart with DateAxis and multiple series with same-date data items, bullets could sometimes disappear while scrolling the chart.
On DateAxis with yearly granularity could sometimes show wrong year.
Updating chart data with less data points was sometimes resulting in JavaScript error.
DateAxis labels/ticks/grid was not placed in the correct position if baseInterval.count > 1 and location > 0.
Dynamically changing ZoomControl value of layout was not working correctly.

JSON: You can now specify both list of items and template settings for ListTemplate, e.g.: titles: { template: { ... }, values: [{ ... }] }. Specifying it the old way will still work.

DateAxis will now pay attention to dateFormatter.firstDayOfWeek when grid is in "weekly" mode.

Using proprtyFields on a LineSeries sometimes could result in an error. (fix by @AndiLi99)
French locale (fr_FR) updated for correct decimal/thousands separators.
Export: scale in image export options was being ignored.
JSON: cursor.snapToSeries was not working in JSON configs.
Selection was acting funky when zooming DateAxis and cursor moved out of plot area.
An infinite error message loop fixed which was happening if series was added and there was no X or Y axes defined.
Tooltip on the last available data item was left visible even if cursor moved to the date where the series had no data points.
When snapToSeries was enabled in XYCursor, vertical line was not shown.
Issue 933.

DateAxis sometimes could show date/time in UTC even if not explicitly enabled.

New plugin chart type: Sunburst!
New Sprite adapter: criticalError. Takes Error object as an argument. Modify it's message property.

Export was somewhat broken in Angular apps or pages with <base> since 4.1.5.
DateAxis was not positioning elements properly when spanning switch to/from daylight savings time.
valign property of the horizontal axis labels now work properly.

New property contextMenuDisabled (default false) added to Sprite. If set to true it will prevent context menu (such as one displayed on right click) from displayed.

Setting data on ColorSet will now automatically reset iterator.

"rightclick" event was essentially not working.
Angular with router enabled were breaking charts in Safari and older Firefox.

DateAxis.gridInterval accessor added. Returns current grid interval.

Calling useTheme() with the same theme multiple times used to cause that theme applied multiple times as well.
Sometimes ValueAxis would not zoom-out to show new selected range when data was updated.
Sometimes axis fills were not visible after zoom-in / zoom-out.
totalPercent was not properly calculated with negative values.

ExportMenu items will be revalidated if data of the chart is updated. This helps avoid missing "Data" export items in menu if data is loaded later than the chart itself.
In stacked axes setup axis tooltips were shown in wrong positions.
Preloader was not always shown when needed.
JavaScript error when hovering cursor over missing data items fixed.
TreeMap data change performance improved.
Horizontal ZoomControl (layout = "horizontal") button text vertical align fix.
Accellerated panning of zoomed-in axis problem fixed.

New Sprite property strokeDashoffset added. Can be used in conjunction with strokeDasharray.
Label has two new properties: path and locationOnPath. If set, will layout the SVG text along a curvature of the SVG path. HTML and multi-line text is not supported.
AxisLabelCircular new property bent added. If set to true, the label will be bent to follow the curvature of the circle. Distance from the circle can be adjusted using radius and label.paddingBottom. For PieSeries the alignLabels need to to be set to false for this feature to work.

JSON: Having property values with both percent and minus signs in them, was resulting in error.
"Z" code in DateFormatter was not taking UTC setting into account.
Exporting SVG with Unicode characters in Edge/IE was resulting in invalid SVG.
Fixed JavaScript error which used happen when disposing chart/changing data in some cases.
Gantt chart sometimes was not displaying first/last data item.
Newly added MapLine elements were not respecting nonScalingStroke = true until zoom level changed.
Series' tooltip was not always visible with DateAxis.

keepSelection added to ValueAxis (will work on DateAxis too). With this set to true, axis will keep the relative selection when data changes (is updated). This is useful for "pre-zooming" a date axis: just set it's start property (e.g. axis.start = 0.8).

If ValueAxis has strictMinMax = true set but min and max are not set, axis will fix the min and max and real high/low values.

cursorTooltipDisabled = true was not working properly in some cases.
Sometimes duplicate MapLineObjects used to appear on map lines.
Some fixes made so that vertically and horizontally stacked axes on XYChart are now possible. Check new example in examples/vertically-stacked-axes.

Standalone scripts were recompiled to use unique Webpack scope, to avoid conflicts with other Webpack packages. If you are using map charts, to avoid breakage, make sure you update to 4.1 version of geodata package as well.

Performance optimizations of date-based charts, especially with more than one series.
Overlapping tooltips of series with gaps in date-based data fixed.
Bullets were not hidden when series was hidden in some cases.
simplifiedProcessing moved from ColumnSeries to Series. If set to true (default false) the chart will not auto-calculate derivative values for data items, like sum, average, change, etc.
Last grid of monthly data was not always drawn.

nonScalingStroke (broken in 4.0.23) fixed.
Legend custom adapters problem (broken in 4.0.23) fixed.

PieChart3D property angle is now limited to 0-90 range.

LabelBullet was not showing text on RadarChart without some additional tweaking.
Clicking and releasing on plot area without moving cursor sometimes could result in chart zooming in.
Bullets for PieSeries, FunnelSeries were not positioned properly.
Labels of PieSeries3D were not being positioned properly if alignLabels = false and label.radius < 0.
Axis' grid was not hidden when axis was hidden.
It was not possible to disable funnel series ticks if alignLabels = true.
Adding a MapLine on zoomed MapChart ignored nonScalinStroke = true until zoom.
On Gantt chart horizontal axis' labels/grid used to bleed out outside the plot area when zoomed in significantly.
Columns of ColumnSeries with strokeOpacity > 0 could leave lines at the beginning/end of the plot area when zoomed-in.
Adapters for fontSize, textDecoration and some other Label-related properties were not working properly.
Chart legend was not updated if data was set directly on PercentSeries.
MapChart was drawing only 109 MapLines in some cases.
MapLine tooltip was not being positioned properly.
When invalidateRawData() was called for a chart with a DateAxis while it was zoomed-in, the chart was not keeping current zoom.
If data was added to a series while it was hidden, bullets of new data items were not hidden.
columns of ColumnSeries were not being cleared when data was updated.
propertyFields.fill/stroke was not respected when value was outside zoom range.
Ticks on a PieChart3D were misaligned.
Preloader of a second and any subsequent chart on the same page was not being centered.
PercentChart legend markers where black if legend.useDefaultMarker = true.
PercentChart legend markers could blink black initially before obtaining true color.
The color scale on a vertical HeatLegend with markersCount > 2 was being drawn reversed.

23 new locales: Arabic, Bosnian, Catalan, Czech, Greek, Estonian, Finnish, Hebrew, Hindi, Croatian, Hungarian, Indonesian, Japanese, Korean, Latvian, Polish, Romanian, Serbian, Thai, Turkish, Vietnamese, Chinese (simplified and traditional versions). Thanks Bjorn Svensson!

It is no longer necessary to use "strictFunctionTypes": false, thanks to goloveychuk for their help.
Broken images were causing export to fail.
Setting Series' name to a number with percent sign was resulting in breakage of the whole chart.

Issues that caused errors in Map an Percent charts on data update and dispose fixed.

Chart with ColumnSeries was failing with an error when data was updated.

MapLineSeries with direct data set were somewhat broken since last update.

JSON: Better id checking and error reporting.

Export menu no longer shows DATA menu for MapChart (and other charts if data is empty).
JSON: Some empty properties like dummyData were not being set properly.
Disposing a chart or series when Legend was enbled was resulting in error.

Dramatically improved performance for data-heavy charts (with 10s and 100s of thousands of data points).
SmallMap viewport indicator rectangle was positioned incorrectly.
Clicking on SmallMap was not moving map to corthis.component.rect location.
Lines from GeoJSON were not drawn by MapLineSeries.
Issue with multiple data points on the same date fixed (not all data points were visible at the end of selection).

New locales: Norwegian Bokmål (np_NO), Danish (da_DK).

Renamed Swedish locale to sv_SE.

Interactions on MacOS Safari was broken sincle last update.

color property added to LegendDataItem. Can be used for coloring label or valueLabel text like text = "[{color}] {name}".
minZoomCount added to Component.
Export now allows formatting numberic values as durations. Use newly added durationFields and durationFormat settings.

Export: When exporting date to XLSX, date fields will now export as true date fields in Excel (which in turn will format them according to regional settings), unless useLocal is set to false.

Charts were not working properly in FireFox Extended Support Release.
Some computer setups were not properly registering mouse movement.
legendSettings was being ignored initially if legend was in external container.
"Week year" (format code "YYYY") was not being properly calculated.

New setting zoomStep added to MapChart. Allows controlling zoom in/out speed.

Series.hidden did not work as expected.
World map did not work in Ember.
Eliminated multiple warnings in recent version of Chrome regarding wheel events being active.
Fixed mousewheel zoom in IEs.
Draggable/resizable items were not working properly on some Android browsers.
Setting height to a relative value for a horizontal ColumnSeries column template was not working propertly.

Charts were broken in IE9.

Cursor/mouse operations were somewhat broken in IE11 and lower.

"disabled" and "enabled" events added to Sprite.
cursorTooltipEnabled added to XYSeries If set to false cursor will not trigger bullet/item tooltips on series.

IMPORTANT (CODE-BREAKING CHANGES) For performance reasons we no longer create axis elements if they are disabled. For the same reasons we disabled by axis.ticks and axis.axisFills by default. Previously to enable them you had to set their strokeOpacity and/or fillOpacity to non-zero. This no longer will work. You will need to set disabled to false instead.
axisRanges now take their default values from dateAxis.axisRanges.template items (axisFill, grid, tick, label). Previously they were using the defaults from dateAxis.renderer.label etc. This was not comfortable and counter-intuitive.

XYChartScrollbar's value axis was calculating min/max with a very big step.
Ember plugin was throwing console errors.
Fixed occasional zoom-in issue on Mobile Safari.
MapChart mouse wheel zoom direction was inverted on some browsers.
Cursor was not snapping correctly to DateAxis items.
Multiple floating columns on the same category were disappearing when scrolling the chart.
Date range fills were off when zooming on Gantt Chart.
Overlapping tooltips problem solved.
When snapToSeries was set for a tooltip, it was flickering a lot on slower browsers.
alignLabels = false on a PieSeries3D was causing labels to be positioned incorrectly.
PieSeries.dataFields.radiusValue was not accounting for chart.innerRadius.
Dynamically updating alignLabels for PieSeries did not work correctly.
Legend: itemValueText only worked if valueText was set.
ValueAxis setting maxZoomFactor = 1 was not working as expected.
Changing values for all data items sometimes was resulting in ValueAxis scale going into negative.
Some more tooltip and cursor related issues fixed.
Axis Fill did not properly fill the whole span when axis was scaled.

In some situations, when geodataSource had events set, it was producing error.
DateAxis was not rounding intervals properly, could display grid at 15:01, 15:31 etc.
Cloning an object was cloning sometimes was causing event handlers to be duplicated.
A leftover console debug line was removed.

snapToSeries added to XYCursor. Allows setting series to which cursor lines should be snapped. Works if one of the axis of the series is DateAxis or CategoryAxis. Won't work if both axes are ValueAxis.
New example: Pie charts in Columns using JSON config.
Export: emptyAs added to both CSV and Excel export options. If set, missing values will be replaced with this value (default is empty string).
New event "beforedisposed" added to Sprite. Kicks in right before the element starts to dismantle itself.
Italian translation.

Export: if no dataFields specify it will now look for fields in all of the data, not just the first line.
When creating a new state on an object, it will not automatically propagate itself on object's clones if applyOnClones = true.
Setting Container's setStateOnChildren will now propage to the new value to its existing clones if applyOnClones = true.
In case deepInvalidate() is called on Container, it forces labels to redraw.
filters on SpriteState is now List (was ListTemplate). It's better for performance which does not require creating Filter template object.

Clicking a hoverable/clickable object was resultin in "over" and "out" events generated next to "hit".
JSON: properties to existing List items were not being applied properly.
Using geodata in Ember app was causing errors (Issue 672).
Export to CSV/Excel was following first line of data values. It now respects dataFields setting, and will replace missing values with emptyAs (new options setting).
Wheel-scrolling in MacOS Safari was very slow.
HTML-based tooltips were too small to fit the actual contents on MaCOS Safari.
DateFormatter was not parsing "i" format as local timezone, rather than UTC.
Sometimes bullets with Rectangle element in them were not positioned properly.
If category was named "undefined", it was messing up label positions on CategoryAxis.
State's property value was not being applied if current value of the property was undefined.
Performance of PieChart and RadarChart improved dramatically under IEs.
In some cases "ready" event was not being fired.
FunnelSeries with 0 (zero) value slices was not rendered correctly.

currentStep added to ColorSet. Allows setting current position of the color iterator.
Adapters added for Sprite properties: inertiaOptions, hitOptions, hoverOptions, swipeOptions, keyboardOptions, cursorOptions.

nonScaling of AxisLabel is no longer set to true by default, to improve performance.

ValueAxis was not updating its scale if series was hidden and animated theme was not enabled.
Zooming an XYChart with all values equal was broken.
Series in an XYChartScrollbar sometimes was not visible initially.
ColumnSeries was drawing 1px line for null value data items.
DateAxis' snapTooltip = true was working incorrectly with skipEmptyPeriods = true.
Logarithmic ValueAxis with axis breaks was resulting in stack overflows.
JSON: Chaining multiple adapters in an array (e.g. adapter: [{...}, {...}]), was not working.
JSON: Adding elements to children via array syntax was not working properly.
JSON: Container elements can now be created via JSON config.
Setting dataFields in Export was only affecting column names. Values for all data fields were still being included in export.

snapTooltip with default value true added to DateAxis. Cursor will snap to the nearest date at which series has values.

Default value of showOnInit set to false for TreeMapSeries.

Solved tooltip overlapping bug.
In TreeMap, when series is toggled off, remaining series will be resized to take up freed space.

snapTooltip added to XYSeries, with default value false. If set to true, the series will show nearest available tooltip when cursor is over plot area.
Slovenian translation.

Automatic DateAxis interval detection improved.

DateFormatter will now automatically format "negative" year values to "BC" (era) format. So not "-1000", but "1000BC". These are translatable via language.
DropShadowFilter of the tooltip removed. Instead it is now applied on background of tooltip. This helps to avoid text distortion.

Heat rules were not working if all the values were the same. Now middle value between min and max is applied in this case.
Updated algorithm to deal with date axes breaks. It's faster now and does not cause stackoverflow if the gaps are very big.
Series on HeatMap charts were ignoring scrollbars.
DateAxis was not properly placing labels if location > 0 and grid interval was bigger than one time unit.
DateAxis with very big date difference (thousands of years) displayed too many grid/labels/ticks.
Masking of a sprite with a container updated. It now pays proper attention to container's position.
Automatic DateAxis interval detection improved. Previously it detected intervals like minutes, hours, days, years. Now it will detect intervals like 15 min, 30 min, 5 days etc. This can still be set manually using axis' baseInterval property.

zoomLevel and zoomGeoPoint properties added to MapSeriesDataItem and IMapSeriesDataFields. If set, these settings instead of automatically-calculated will be used when zoomToMapObject() method is invoked.

verticalCenter and horizontalCenter is no longer applied to rotated axis labels. If you are setting rotation on axis labels, make sure to adjust these settings as well as per your requirement.

Setting axis.renderer.inside was ignored if set after chart was already initialized.
Changing align of the a sprite was ignored if set after it was already initialized.
Top level TreeMap segment tooltip was positioned incorrectly after drilling down and back up.
min/max of ValueAxis was not being updated after invalidateRawData() call, and series were stacked.
Tooltip sometimes was pointing outside chart container.
ChordLink bullets were not properly positioned on init.
DateAxis was not working well if baseInterval.count > 1.

Ability to set default locale via am4core.options.defaultLocale. When set, all new charts will automatically assume that locale, freeing you from setting locale for each chart individually.
reverseOrder added to Container. Allows reversing order of its children.

Moved Legend of a MapChart from chartAndLegendContainer to chartContainer. In order to position legend on map chart, use legend.align / legend.valign properties.
Default value of showOnInit on any Series is now false. Except if you are using "animated" theme, which sets it to true by default.

JSON: Using type: "Sprite" in JSON config was not creating elements properly.
Initial chart rendering optimized Charts should build faster.
Some more performance optimizations.
Setting hiddenInLegend on Series after chart was already built had no effect.

New method setInterval() on all base objects added. Works exactly like JS's setInterval but is automatically killed when target object is disposed.
Added array utilities to am4core.

Removed unused "label" adapter from Axis.

Issue 588.
Fixed mouse wheel and zoom control zooming of a map which does not occupies all the div size.
Fixed map scaling issues of a map which does not occupies all the div size.
Sometimes axis labels were not formatted using number or other formatters.
Adapters of data items were not being copied to clones.
text property of AxisDataItem was not being copied to clones.

Issues with stacked series and min/max of ValueAxis fixed.
Chart cursor now dispatches "panning" event only if moved by at least 3 pixels. This solves problem with panning on click.
If extraMin/extraMax were set on ValueAxis, some unnecessary zoom used to happen.

Droping BETA tag!
DropShadowFilter will now always use balck by default instead of "alternativeBackground" from the theme.

Setting hiddenInLegend = true on Series was causing the chart to hang.

Full source code for amCharts 4 is now included under /src/.

Full language files are now under /src/lang/. If you need to make a translation, do a PR on those files/dir.

In some situations waiting for "ready" event was producing unnecessary frame requests.

"ready" event added to Sprite. Sprite fires it right after "init" event. Container fires it when all of its children are ready.
system.isPaused property added. Setting it to true will effectively pause any chart activity, making them completely static.
ErrorBullet class added. Allows drawing error charts. (Check error-chart and xy-error-chart examples for code samples)
JSON: String-based cursorOverStyle and cursorDownStyle are not supported.

JSON: Setting ColorSet properties baseColor or list was not working properly.
Accessibility: Legend item was not properly referring to a Series via labelled-by.
Label.wrap was breaking lines mid-word even if there where words that would fit into alotted space.
Memory leak fixed.
Sometimes Animation was not firing "animationended" event (when elastic easing was used).

exportable (default true) property added to Sprite. If set to true this element will not appear in the exported image of the chart.

exportable is now set to false by default on Scrollbar grips, zoom out button.

JSON: dateFormats was being ignored.

hideOverflow added to SVGContainer class. If set to true it will apply overflow: hidden to chart container so that all chart elements are contained within. Default is false, except on MapChart, which has it at true.

Some adjustments and fixes to animations associated with hide()/show() functions.
If a legend was initially disabled, it was not appearing when enabled later.
chart.addData() was not adding data to XYChart scrollbar series.

JSON: forceCreate property added. If found in an item of an array, it will force creation of the new object, even if object with same index already exists in target List.
French locale.

Adjusted animation durations in "animated" theme.

JSON: String-based percent and color values were not being parsed correctly in some cases.
JSON: HeatLegend was erroring if its series property was referencing to Series by id.
Disposing an item with a custom id set was not clearing it from id map properly resulting in errors if item with the same id was being added later.
SankeyDiagram was not taking chart's padding into account when sizing itself.
Axis ticks were not being positioned properly after data update.
Map using deltaLongitude was being positioned incorrectly.
3D columns z-indexing was sometimes incorrect.
PieChart label placement with custom startAngle/endAngle was sometimes off.
Label bullets on columns were not being restored from truncated state when width of the columns was increasing.
Series show()/hide() were using interpolationDuration setting instead of defaultState/hiddenState transition duration when showing/hiding.

chart.hiddenState.properties.opacity is no longer set to 1 by default. Removed this in order it to be 0 so that charts using animated theme would always fade-in.
Better initial rendering of ValueAxis (removed unneeded animations).
Sometimes map was not positioning itself at homeGeoPoint.
Map with Eckert6 projection in some cases was not displayed properly.

Legend in external container was resulting in infinite loop.
Rendering an arrow on a MapLine with same source and destination point was resulting in error.

goHome() on MapChart was not working properly.
projection change on MapChart was not working properly.

DataParser property type was renamed to contentType in order not to conincide with JSON-based config built-in keyword type.

Some rendering issues fixed.

Removed console debug (yes, again).

Removed console debug.

You can now use "{percent}" placeholder in tooltipText of HeatMapSeries items.

Draggable/trackable areas of the chart were intercepting all mouse buttons, including right and back/forward.
Fixed MapChart issue with dragging map by touch on hybrid devices.

ColumnSeries3D were broken since last release.

axisFills.template.interactionsEnabled is now set to false by default. If you need to attach events on an axis fill, you will need to set it to true.

autoDispose property added to Series and Axis classes with default value true. This means that series/axis will be automatically disposed when removed from chart's series, xAxes, or yAxes lists.
It is now possible to have 3D stacked columns (by setting clustered = false on series).

If chart container was moved in DOM tree, it stopped sensing resize and was not updating its size anymore.
Sometimes ValueAxis could show zero label with a minus sign.
Arrows on MapLine were not drawn.
It was not possible to change the text color of the tooltip on TreeMap diagram.
axis.tooltipPosition = "pointer" was not working as it should - always follow the mouse/pointer.
If series had data set directly, it was still using chart's global data, resulting in combined datasets and potentially visual anomalies.
Setting cellStartLocation did not have any effect on an already inited chart.
Line series could be cut off in the beginning (when zoomed-in closely).
Vertical axis ticks were not being positioned properly if axis had a title.
3D columns were not using chart's depth/angle.

For any XYSeries if the itemReaderText is not set explicitly, it will automatically try to fill with values from dataFields, so that each series element, like a Column has at least rudimentary screen-reader text.

Added in TypeScript 3.x support.
ColumnSeries with two category axes anomaly fixed.

Calling dispose() on a TreeMap was causing an error.
Legend items were being duplicated every time its disabled property was reset back to false.

Keyboard dragging of elements such as scrollbar grips was not working.
"hoverable" elements were not staying "hovered" after tap in Mobile Safari.
addData() with more than one data item added was not working well.
Zoomout button was visible on initial animation.
Dynamically changing Legend.position was not updating its layout properly.
Vertical axis tick position with rotated labels was incorrect.

Some charts were not properly displayed if initialized in a hidden (display: none) container, then revealed (display: block).
Last slice of the PyramidSeries was not visible for certain widths.
Adding Legend to a chart that had series with bullets using heatrules was causing an error.
Label rotation was being ignored on SlicedChart.
Labels of PyramidSeries were not centered (when alignLabels = false).
Animation of labels for horizontal PictorialSeries was very jumpy.
position and rotation of labels in PyramidSeries was not working properly.
An error was occurring if chart's with a category axis data was updated and it contained less data points than before.

tooltip.defaultState.transitionDuration and tooltip.hiddenState.transitionDuration default values of animated theme set to 400.

Chart was not being drawn properly when instantiated in a hiden container.

Chart Cursor was preventing hovers on series' elements like columns or bullets.
Mouse cursor's down styles (like on scrollbar) were not being reset back properly in some cases.

Axis glitches in XYChart3D.
XYCursor movement issues.

tooltip.hiddenState.transtionDuration and tooltip.defaultState.transitionDuration are now set to 1 (on non-animated theme) to avoid some tooltip flickering.
Individual legend items (label, value label, and marker) now have their interactionsEnabled = false set by default to avoid double events. If you need to add events to these particular elements (as opposed to the whole legend item), you will need to set interactionsEnabled = true on that element.

Calling show() on a MapSeries object was resulting in an error.
3D columns were not visible if their value was zero.
Bullets are now hidden if minBulletDistance is set.

shouldClone flag added to EventDispatcher's on and once methods. Can be used to restrict cloning of events when object itself is cloned.
showOnInit property added to Sprite. If this is set to true, the Sprite, when inited will be instantly hidden ("hidden" state applied) and then shown (animate properties form "hidden" state to "default" state). Animation will take defaultState.transitionDuration. Series, Chart classes has this set to true, so that they would perform initial animations. If you want a sprite (chart, series) not to be shown initially, you can set Sprite's hidden to true. (setting sprite.visible = true won't work as expected anymore).

If chart rendering takes too long, it now is split into chunks, which makes the browser/page remain responsive even if you have a lot of charts to build.
Changed how pre-hiding Series works. If you want series to be initially hidden, use series.hidden = true instead of series.visible = false.
Removed "hold" and "rotate" interaction events and releated options and functionality, since they weren't used anywhere.
Removed "delayFirstHit" option from Sprite.hitOptions.
chart.defaultState.transitionDuration is set to 1. This allows the chart to appear one frame after init and helps to avoid various flickers that happen while chart is building. Animated theme has this value set to 2000.

Performance enhancements.
Non-draggable/trackable but otherwise interactive elements of the chart no longer prevent scrolling and other gestures on touch screens.
PieSeries labels sometimes were positioned incorrectly (using non-default start/end angles).
Slices (also columns of RadarChart) were not drawn if radius <= 0 (even if innerRadius > 0). This resulted in radar columns not rendered in some cases.
MapChart was not resizing properly when div size changed.
PictorialStackedSeries, while containerdiv was resized did flicker a lot.
If a Tooltip is visible while its Sprite changes size/position, it updates its position as well.
Setting chart.data = [] was not clearing data properly.

In some cases a PieChart could overlap its legend.
PieChart flicker after invalidateData fixed.
An error was occurring when data was updated on chart with series with bullet while hovering it with cursor.

Tooltip issue fixed.

If element has url set, when clicked, it will now parse for data placeholders in curcly brackets, e.g. "{category}" allowing have dynamic data-driven URLs. Note, the elements are not url-encoded so you need to specify encoding manually, e.g.: series.columns.template.url = "https://www.google.com/search?q={category.urlEncode()}";.

Label.fullWords = false was not working properly.
AxisLabelCircular was positioning labels incorrectly, if label.radius was negative (since 59).
"grid" layout in Container was incorrectly layouting elements if their width was set in percent.
[IE] Multi-line truncated labels were not working properly on IE.
[IE] was incorrectly zIndexing elemens (since version 56).
[IE] tooltip initial flicker solved.
[IE] was incorrectly sorting multiple series tooltips (if Cursor was used).

"hidden" data field added to series' dataFields. Removed "visible" data field from PercentSeries. You should use "hidden" data field to set which slices/columns/etc. are hidden initally.
AxisLabelCircular's radius can now be set in Percent. PieChart's label radius default value was set to 5%.

Multi-line labels were not being aligned properly in IEs.
In some cases, fillModifier was not applied if set after fill.
In some cases, a chart with seriesContainer disabled, or when seriesContainer's height/width was 0, could produce a JS error.
Some performance tuneups, especially for charts with axes and more data.

widthRatio and heightRatio properties on Image.

Some adapters for Axis elements were being applied twice.

ExportMenu's "custom" items can now have "callback" which is a function to call when clicked on such custom item.

Slice labels on a PieChart now move with the slice (if alignLables = false).

requestAnimationFrame now is called only when needed. This reduces idle CPU usage.
Fixed m4core.color() result caching issue.
Charts were broken in IEs since beta.57.
Tooltip on LineSeries was not updating color if segment changed color.
MapChart without any series was displaying an error in console.
Axis tooltip was trimmed when renderer.inside = true.
StepLineSeries startLocation/endLocation bug fixed.
"hover" state was not being applied to series' bullet if it did not hav tooltipText set.
bulletLocation for horizontal ColumnSeries fixed.
Value labels of Legend were not in correct positions if Legend was positioned at the top or bottom (too close to legend label).

All charts (that inherit from Chart) now will apply "hidden" state right after they are validated, then immediately "default" state. This allows creating initial animations such as fade-in (if using animated theme). All you need to do is set: chart.hiddenState.properties.opacity = 0;.

Mouse wheel zoom was broken since beta.56 on MapChart.
Pushing Sprite to Container.children directly (instead of setting parent) used to produce a JS error.

New Sprite adapter: "populateString". Applied to strings after Sprite replaces data binders with real values, but before any formatting by Label kicks in.
New Label property: ignoreFormatting. If set to true will treat formatting blocks in square brackes (e.g. "[red bold]") as regular text and will display them as such.

Default big, small, and byte suffixes in NumberFormatter are now translatable via locale files.
The suffix for thousands "kilo", was changed to lowercase "k", as per standards.
On XYChart, default for mouseWheelBehavior changed to "none" (was "zoomX").

Improved performance! All charts types are now noticably, some drastically are faster. Some memory leakages fixed as well.
Now MapPolygonSeries will not inherit chart's global geodata if it has own geodataSource set.
DateFormatter was not parsing all AM/PM string dates correctly.
DateFormatter was not parsing MMM (short month names like "Jan", "Feb") propertly.
In-line date formatter was not working correctly in some cases, e.g. "{dateX.formatDate()}".
Setting chart.mouseWheelBehavior = "none" did not release wheel scrolling of the web page when hovering over chart.
DataSource's' "done" event was being called if parsing of loaded data failed. Not anymore. "done" is called only on successful load. To catch any load (including one that ended in http or parse error) use "ended".
DataSource's' reloadFrequency was broken if error occurred during one of the loads. This has been fixed. Even if error occurrs, loader will try to reload data in the next reload slot.
JSON: heatRules did not work properly with their target set to a list template, e.g. mapPolygons.template.
Auto-calculated DateAxis.baseInterval was not being carried over to the XYChartScrollbar.
DurationAxis scale sometimes was dropping to negative values, even there were no negative values in data.
PieChart and Legend were not working properly with chart.zoom() or legend.zoom() methods.

New series type suitable for SlicedChart: PictorialStackedSeries. (check pictorial-stacked-chart and pictorial-stacked-chart-horizontal demos)
New themes: "dataviz", "moorisekingdom", "frozen", "spiritedaway".
New Chart property: logo. If you are using amCharts with a free license, it holds reference to amCharts logo. Use it to position logo with align and valign properties.
New FunnelTick properties: locationX and locationY. Allow specifying a relative location within target element where tick is pointing to.

FunnelChart was renamed to SlicedChart. The previous name did not correctly represent capabilities of the chart type that can display not only funnel series, but also pyramids and stacked pictorial series. FunnelSeries remains as it was before.

Mouse wheel zoom was extremely slow in FireFox.
Sometimes colors duplicate colors were generated by ColorSet.
HTML-based labels were not accounting for "pixel ratio" on Retina displays, making tooltips larger then they are supposed to be.

Chart Cursor was working only for the first chart on the same page.
CSVParser was not parsing dateFields and numberFields correctly.
Issues with labels rendering in incorrect position fixed.
LinearGradientModifier was not copying gradient properties to clones (since last version only).
FunnelSlice sometimes rendered slice edges with no anti-aliasing.
When calculating area of the Pyramid slices height of sliceConnector was not being taken into account.
Reset label.renderingFrequency back to 1 to solve some unwanted label flickering.
MapImage items were not showing if added via series.data (since last version only).

New property durationFormat on DurationFormatter. If set, it will force this format to be used, instead of one determined by baseUnit.

CurvedColumnSeries added. Allows having columns as curves or as triangles. Check curved-column-chart and triangle-column-chart in examples folder.
RadialGradientModifier class added. Allows building more donut-like pie charts. Check semi-circle-donut-chart in examples.
New chart type: FunnelChart, which can show regular FunnelSeries and PyramidSeries.
New axis type: DurationAxis. Values on it are treated and formatted like time durations.
extraMin and extraMax properties added to ValueAxis. Can be used to relatively adjust calculated minimum and maximum scale values.
Two new read-only properties added to Container: contentWidth and contentHeight. Will hold width/height in pixels of the actual dimensions of elements in Container.

DurationFormatter now uses TimeUnit for its baseUnit, rather than arbitrary codes.
durationFormat property was removed from DurationFormatter. Use getFormat() method to get correct format instead, then pass in to format().
Series will not show a tooltip (if one axis is CategoryAxis) if there is no value for this category (used to show tooltip if it had some extra text).

Legend valueLabel values were not shown on chart initial render.
3D pie slices were not showing full stroke, only on the upper part of a slice.
Sometimes XYChart did some additional animation even after all series finished animating, causing zoom-out flashing briefly.
XYChartScrollbar was not showing series if data to the original series was added later (or changed).
Chrome was not showing line series in XYChartScrollbar if all values were equal.
Creating an empty line (without multiGeoLine set) was resulting in critical error.

Changed Label.renderingFrequency to 2, for better performance.

Performance tweaking.
DateAxis.baseInterval was ignored in JSON-based configs.
"hoverActive" state was not always being correctly applied.
Better handling of cursor zoom and pan when outside chart area.
Fixed occasional error when formatting dates or numbers.
Line chart starts new segement only if properties (like stroke, fill, strokeDashArray, etc.) in data have changed. It used to start new segment if properties in data were defined resulting in reduced performance and disabled smoothed lines.
Labels were not updating their position if their fontSize changed.
Sprite.nonScalingStroke = true was ignored if set after Sprite.strokeWidth.
LineSeries could leave some garbage lines while zooming.
ColumnSeries could leave some garbage columns while zooming.
DateAxis with one date only in chart data was not rendered properly.
The chart was not zooming out after data validation.
Added ghostLabel to Axis which is an invisible label and it helps to avoid unwanted changes of axis widht/height when the scale changes, e.g. on zoom.
zoomToMapObject, if used with MapPolygon and custom zoomLevel was not working properly.
"hidden" event of Series was called on initial chart initialization.

am4core.unuseAllThemes() method added. Any chart created after this method call will not have any theme applied to it.
New property am4core.registry.baseSprites will now hold all active (non-disposed) instances of top-level elements, such as charts.
startLocation/endLocation properties added to CategoryAxis (previously available on DateAxis only). Allows to specify location the first and last cells of the axis should start on respectively.
innerRadius of a Slice can now be set as Percent (e.g. am4core.percent(50)).
You can now set custom radii (radius property) on Pie series (if you have more than one, you might want one to be larger and another smaller).

MapLine.imagesToConnect now accepts an array of string IDs that can reference images by their id property.
Changed tooltip inheritance so that it checks for virtualParent rather than direct parent. E.g. series' bullets use series' tooltip and not chart tooltip as it was before.

Map polygon stroke thickness could be rendered incorrectly when zooming quickly. (Issue #175)
Calling addData() more than once before data was validated resulted only last data item to be added. (Issue #222)
DateAxis.baseInterval was ignored if data was set directly on series.
MapLine was not paying attention to the properties set on template.
HeatLegend was not updating its label count after its size changed. This could have been resulting in very few labels if initial container (div) size was small.
The map portion of MapChart was incorrectly positioned after container (div) resize.
Object properties, like "name" in GeoJSON were overriding same properties in MapSeries data. Now, the values specified in data are used over ones in GeoJSON. (Issue #307)
Axis ranges used to reset axisRange.label.text. (Issue #308)
Fixed issues with disposing series and charts.
Updated to canvg 1.5.3 to fix em/rem text issue for epoxrt fallbacks.

JSON config: added callback property, which if it holds a reference to function will call it within the scope of the object being prepared.
Adapters for url and urlTarget properties.
Chart can now be panned or zoomed using mouse wheel. To set what it does use mouseWheelBehavior on XYChart (see next point)
mouseWheelBehavior added to XYChart. Options: "zoomX" (default), "zoomY", "zoomXY", "panX", "panY", "panXY", "none".
mouseWheelBehavior added to MapChart. Options: "zoom" (default), "none".

Second parameter to Cursor's triggerMove() method was changed from boolean to enumeration of "stickiness" level: "hard", "soft", "none" (default).

Error fixed when Popup object was being disposed.
Over-panning of an XYChart did not disappear after mouse button was released outside chart.
Multiple memory leaks fixed.
MapChart was rounding lat/long coordinates too much which was resulting in pixelated maps for small-area maps.

useWebFonts setting in Export. Allows disabling of download of web fonts when exporting.
useRetina setting in Export. Images are now exported scaled up on retina displays by default. Set useRetina = false to disable.

Export fallback mechanism for older browsers changed from FabricJS to canvg, which is much lighter and has better text formatting support.
On retina displays images will now export supersized in order not to lose quality. Set useRetina = false to disable.
amCharts logo will now auto-hide on supersmall chart sizes.

Cursor was zooming the chart even if drag motion was performed on an external element positioned over the chart.
Cursor was not hidden when it was no longer hovering the chart area if chart had no padding.
urlTarget was not carried over from ListTemplate template to new items.
Cursor could cause chart to freeze up on a DateAxis with empty cells in the axis' beginning or end.
Export will now correctly handle web fonts, such as Google Fonts. Please note that FontAwesome is not supported, since they forbit any kind of usage, except inclusion via CSS.

New series type: OHLCSeries.
goHome() method added to MapChart. Calling it will reset map to homeZoomLevel and homeGeoPoint.
homeGeoPoint added to MapChart. Allows setting initial geoPoint at which map will be centered.
homeZoomLevel added to MapChart. Allows setting initial zoomLevel.
maxPanOut property added to MapChart, with default value 0.7. It prevents map to be dragged out of the chart area.
noRisers property added to StepLineSeries. It allows step line chart without vertical (or horizontal, depending on orientation) lines.
Step line without risers now allows making Waterfall chart. Example added.
startLocation and endLocation added to StepLineSeries, that allow controling locations at which step should start/end.
maxPrecision added for ValueAxis. Use it to restrict Value axis to show value labels with less than desired precision (set 0 if you only want integers).
Portugese (Portugal) translation added.

Cursor will now not move if there's some element obstructing the chart's plot area, e.g. a popup or some other element outside the chart.

Series' and axes' tooltips will now correctly inherit formatters.
Errors when hovering mouse cursor over open Modal.
JSON: children property of Container-type objects was not being processed correctly.
Popup/Modal now sets aria-label automatically if title is set.
Removing bullet template from series or disposing it will remove/dispose all the bullets created from it.
Tooltips were overlapping each other, fixed for the most part, but might still be some situations where they overlap.
Changing data for MapImageSeries and MapLineSeries used to result runtime error.

TreeMap.homeText was not working.
TreeMap used to display upper level bullets/labels when drilled-down.
TreeMap had issues with hiding items using legend (when not using animated state).
Chart cursor was not visible if data was set directly on axis/series but not on chart.

New hardcoded Sprite state name added "hoverActive" which (if defined) is applied on active elements on hover. This state is applied last in the chain.
New property on DataSource: keepCount. If set to true incremental updates will remove data items from the beginning of the current dataset, when adding the newly-loaded ones.
New property on DataSource: incrementalParams. It's an object whose key/value pairs will be added to URL as parameters when DataSource is making an incremental load request.
Popup (and Modal) now have an event dispatcher (events) with two events: "opened" and "closed". (more info)

Legend now respects itemContainers.template.togglable = false, which disables default functionality of toggling items when clicked in legend, allowing users to attach their own funcitonality to legend item clicks.
Toggling of items in Legend can now be disabled by setting chart.legend.itemContainers.template.togglable = false.
In XYChart with a DateAxis, cursor and data at irregular intervals will now display a Tooltip for nearest available series' data item.
zoomToCategories method of CategoryAxis now zooms to the end of the "to" category.
Default urlTarget of amCharts logo is now "_blank".

In DataSource the formatters inputDateFormat was ignored.
Incremental data load via DataSource was not working.
Tooltip used to flicker ar 0,0 position in some cases when hovering over elements.
Fixed issue which caused chart to gradually shrink to invisibility under some conditions.
Fixed rendering errors for charts that were initialized in hidden containers.
XYCursor lines and axis tooltips were not shown if chart did not have any data (data was set directly on axis/series).

TreeMap now supports legend. Legend will be displayed if a) TreeMap data is at least two levels deep (legend displays items from a second level); b) chart.maxLevels is set to 2 (without setting it no second-level series are created so legend does not have anything to build itself from). More info.
Swedish translation.

DateFormatter will now automatically capitalize month/weekday name if it's the first (or only) word in resulting formatted date. This can be turned off by setting formatter's capitalize to false.

Removed @deprecated commented out methods/properties that were confusing tslint.
Issue that caused the chart to shrink was fixed.

$net.load() options parameter now supports responseType. If set to "blob" will return response as Blob object in result.blob.

Value axis min/max calculation algorithm adjusted. Fixed an issue with strictMinMax = true and issue with min/max when axis size was very small.
Export now correctly uses external fonts included via @import, such as Google Fonts.
Non-clickable columns in ColumnSeries will no longer gain focus on click/tap, unless its hitOptions.noFocus is set to false.
Noon was incorrectly formatted as "AM", instead of "PM".
TextFormatter was producing invalid style value on empty formatting blocks ("[]").
parent was not being set for a Sprite that was pushed directly to Container.children.
If axis labels were disabled, ranges labels were not visible.
Axis used to reset some of the user-set values when initing renderer, e.g. dateAxis.renderer.grid.template.location = 0.5 was not working.
XYChart with category axis + date axis was not working properly.
Stacked chart with logarithmic axis was not working properly.
JSON: local formatter instances were not being instantiated properly, so all children objects were reusing chart's main formatters.
JSON: Patterns are now supported.

Updated default Popup CSS to eliminate a rare scrollbar flashing issue.
Fixed an error with PDF exporting.

MapSeries now has geodata and geodataSource. This allows setting separate maps to each separate map series, which no longer rely on single chart-wide geodata. Also, setting geodata for MapSeries will automatically set useGeodata = true, so no need to set it manually.

Removed unused boldUnitChange from DateAxis.
Labels on DateAxis will now pay attention to label.location if label represents full time period between grids. It no longer will force labels to be in the middle.
label.currentText is now public.

Fixed parsing of string dates in ISO format ("i").
Legend marker was not aligned with the text (when marker was smaller).
Solved legend error which happens if you show/hide series after series was added/removed.
Dynamically adding series was not automatically adjusting axis scales.
Vertical CategoryAxis was not paying attention to grid.location.
Map issues at minZoomLevel < 1 fixed.

German translation. (de_DE)

XYChart.getUpdatedRange() method is now public so you can use it to recalculate absolute axis range into a relative that takes current zoom and inversion into account.
Language now supports null in translations which means an empty string.
Interface iColorSetStepOptions was renamed to IColorSetStepOptions to maintain consistency.
Interface ColorPurpose was renamed to IColorPurpose to maintain consistency.
FlowDiagramNode value property renamed to total, added totalIncoming and totalOutgoing properties which hold sum of all incoming/outgoing links.
Removed aliases startCategory, startValue, and startDate from Axes data items. (use category, value, and date respectively)

Improved performance of Sankey/Chord Diagrams.
Elements of TreeMapChart were not respecting locale.
Fixed-height bars were drawn incorrectly.
Pre-hidden series were not taken into account when calculating min/max of value axes in some cases.
Setting chart data with less data items then there were before resulted in an error.

useChartAngles added to AxisRendererCircular. If set to false allows to set startAngle/endAngle to each circular axis individually.

Fixed problem with custom Legend data and initial visibility, you can now use visible: false to pre-hide custom legend items.
Grid Layout fixed, affects Legend.

Using PieSeries data field "visible" was not graying out Legend's marker.

You can now make series initially to be hidden by setting series.visible = false.
visible added to PieSeries.dataFields. It allows making some of the slices initially hidden.

Sankey/Chord diagrams has now toggling nodes enabled by default. To disable, set chart.nodes.template.togglable = false.

Text formatter now correctly escapes double square/curly brackets, as well as empty formatting blocks [].
Setting series.visible = false or series.hide() wasn't toggling off related item in Legend.
Setting isActive did not affect Container's background (assuming it had "active" state).

elements property in Popup. Returns an object consisting of references to various elements of the Popup, like content block, close button, etc.

am4core.getSystem() has been changed to am4core.system

Fixed double "amcharts" in Popup's class names.
Fixed dragging on of absolute-positioned Popups.
Escaping square brackets in text (by repeating them twice) was not working.
Fixed a lot of disposer leaks.
Fixed an issue that caused runtime errors with Rollup.

New adapter on Component (and everything that inherits it including charts and series): "data".
New adapter on Popup: "closable".

showModal() and hideModal() methods were renamed to openModal() and closeModal() respectively.
show() and hide() methods on Popup/Modal were renamed to open() and close() respectively.

More performance-related improvements, especially with CategoryAxis.
Changing interactionsEnabled from false to true was not working properly in IE.
Setting axisRenderer.inside = true after chart was already built didn't work.
zoomlevelchanged event of MapChart was being fired even if zoom level did not change.
Setting MapChart.deltaLongitude was ignored if it was set before projection was set.
Map tooltip bounds were not being updated when map container's size changed.

Dramatic performance improvements!

calculatePercent flag added to Series. Default value is false, except for PieSeries. Series will not calculate percent values of each data item if this is not explicitly set to true. Since it wasn't been used anywhere but Pie chart, this should improve performance of initial data parsing.

Performance improvements. Especially when zooming/scrolling chart with a lot of data.
lineSeries was not paying attention to propertyField values set in data.
Radar and Gauge charts were not centered properly when resizing window.
Container's background properties were not copied when cloning container.

To maintain event-naming consistency, events "insert" and "remove" were renamed to "inserted" and "removed" respectively in List and its inheriting classes. [#132]
To maintain event-naming consistency, events "clear" and "remove" were renamed to "cleared" and "removed" respectively in Dictionary and its inheriting classes.

Significant performance improvements were made.
JSON config: Filters could not be used.
Some properties were not being copied when cloning objects, e.g. segments in LineSeries. (interactionsEnabled and some others)
Circular axis was not properly drawing grid lines if radius was < percent(100).
Button label was "stealing" interactions from the button itself.
Tooltip was sometimes drawn without pointer if "animated" theme was not enabled.
Fixed label alignment of Y axis.

Improved contentAlign (when content size is bigger than actual size of a container).

Two new adapters added to Label: "textOutput" and "htmlOutput". Both are applied after label contents (text or HTML respectively) are populated with data.
Added "custom" option to export menu types, which now allows creating clickable custom items in the ExportMenu.
Legend now accepts "raw" data, enabling creating custom items: legend.data = [{name:"name 1", fill:"#ff0000"}, {name:"name 2", fill:"#00ff00"}]. Important: a legend with custom items must be added to some chart container manually (e.g. chart.chartContainer). Assigning it to chart.legend will overwrite its data.

Layouting mechanism was revamped to make it more consistent and intuitive. If you see some layout issues with your chart, please let us know!

New chart type: ChordDiagram.

The Adapter keys property is now a 0-argument function and not a property.
Adapter callback now has third parameter key, which is a string indentifier of the adapter being applied.
ChordDiagram, same as SankeyDiagram now extend FlowDiagram class. FlowDiagram can not be instantiated alone, it's a base class for those two.
minWidth/minHeight is now set to some small amount on a PieChart so that it remains visible even, if the oversized legend does not fit into container.
heatRules no longer override properties if they are set using propertyFields.

Printing in Firefox was broken after latest updates in export/print.
Re-enabled data export on legacy IEs.
If a legend was initially disabled, it did not show up after enabling it later.
Series tooltip was not disposed when series was disposed. This could result in tooltips hanging and not hidin in such charts as TreeMap after data was changed.
Tooltip was sometimes flickeing at 0,0 position when first hovered on columns of a series.
When all values were 0, XYChart was not displayed properly.
When all values were equal and less than 0, XYChart was not displayed properly.
Zero-value slices were shown as black rectangles in the pie chart legend.
Labels were not showing tooltips.
LineSeries was not displayed properly if colors were set in data. (using propertyFields)
Tooltips were shown with white background when first hovered over slices/columns/etc.
Setting interactionsEnabled = true did not if it was set to false previously.
axisFill was not showing innerRadius correctly if it was set as Percent.
Data update on SankyDiagram was resulting in error.

JSON config: heatRules can now refer to bullets in tartget using syntax "bullets.0.property", e.g. "bullets.0.circle". (meaning use "circle" property of the first bullet as heat rule target)
Export: fixed SVG export on Firefox.
Export: fixed SVG/CSV/JSON export for Edge/IE.
Export: fixed sheet name limitations for Excel export.
Export: print option was printing the whole page instead of just chart on IEs.
Export: fixed bitmap image export on IEs.
Issue 65.

class attribute is no longer applied to elements by default. To enable it use new setting am4core.options.autoSetClassName.
class attributes now will contain the whole inheritance chain, e.g. "amcharts-Sprite amcharts-Container amcharts-Button". Class names are no longer lowercased.
The svgContainer property is now an SVGContainer, not an HTMLElement.

New global option am4core.options.autoSetClassName (default false). If set to true will set class attribute of all elements that reflect class element was created in, including inheritance, e.g. "amcharts-Sprite amcharts-Container amcharts-Button".

Element-level classNamePrefix is no longer available. Use global am4core.options.autoSetClassName instead.

Wrong Cursor behavior in Edge browser on hybrid touch screens.
Malfunctioning colors in IE9.
Console errors, triggered by mouse hover in IE9.
A bunch of errors and bugs on Popup/Modal in IE9.
Enabling ExportMenu on IEs was breaking the chart.
"dragstop" event was not being triggered on touch and hybrid devices.

Dramatically improved performance of dragging of Popup.
The dataItem of the tooltip is now set sooner, which enables it to be used in its various adapters.

Sprite now has hoverOptions which can be used to set up how touch "hovering" works.

Using chart Cursor now prevents default browser gestures on touch and hybrid displays.
Disabling elements (e.g. Legend or Axis labels) will now make other elements take up vacant space automatically.
Tooltips on XYSeries data items with zero value were not being shown.
Sometimes XYSeries tooltips were messed up and shown in incorrect position.
Updating chart data with stacked series could result incorrect min/max values on ValueAxis.
Treemap was not showing all the required levels on zoom-out unless animated theme was being used.
Sometimes unpredictable behavior of labels on a logarithmic value axis was fixed.
DateAxis with skipEmptyPeriods = true was showing axis tooltip at incorrect positions in some cases.

Sprite.mouseEnabled was renamed to interactionsEnabled.
An option "mouse" for tooltipPosition was renamed to "pointer".

Issue with Label text truncation.
Huge performance improvements, especially on initial chart load.
Animation.resume() was not working.

Default tooltipLocation on SankeyLink is now 0.5.
Default value of series.hiddenState.opacity is now 0 (was 1). Animated theme sets it to 1, because it animates stuff by interpolation, rather than fade.

pt_BR and en_CA locales.
fullWords property on Label. Works only when truncate = true. Setting to false will force non-fitting label to be truncated in the middle of the word.

Error with EventDispatcher is disposed.
Having "stray" axis objects (not attached to any chart) was resulting in critical error.
Zooming was broken on RadarCursor since last update.
PieSeries.legendSettings were being ingored.
Cursor was incorrectly doing panY (inverted).
Date axis tooltip was not rounding dates to baseDuration.
Date axis was not working properly with min/max values set.

Redone chart print functionality. Now printing is done via <iframe> by default. An alternative CSS option is also available.
If series' bullets have hover state set, it will be applied whenever chart cursor is over position, even if not directly hovering over bullet.
XYSeries used hidden/default state transitionDuration for interpolating values when showing/hiding series. Now they use series.interpolationDuration.
ZoomOut button was under the cursor lines making it impossible to click.
easing renamed to transitionEasing in SpriteState, for consistency.
When setting width/height for an element in pixels, minWidth and maxWidth is also set to the same values.
If interpolationDuration is 0 and hiddenState.transitionDuration > 0, the series will transit to hidden state first and then instantly interpolate values to 0.

Finished cursor updates to support cursor syncing.

Using tooltipHTML was very buggy.
Text formatting with two adjacent formatting blocks ([...][...]) was broken.
DateFormatter was ignoring utc setting when formatting dates.
Popup no longer obstructs the chart around it.
Popup/Modal and Export Menu now temporarily disable all interactivity behind it.

DataSource now has property requestOptions which you can use to add custom request headers to HTTP(S) requests.
Popup.title property.
Popup.draggable property (boolean). Default true. Makes popups draggable.
ru_RU (Russian) and nl_NL (Dutch) translations.
Dictionary, DictionaryTemplate, List, ListTemplate, OrderedList, OrderedListTemplate, SortedList, and SortedListTemplate have these new methods:
each (which calls a function for each element in the data structure)
Symbol.iterator (which is used for the ES6 iterator protocol)
New Cursor event: "behaviorcanceled". (called when zoom/pan/select operation is abandoned)
New Cursor methods: triggerMove(), triggerDown(), and triggerUp() for improving cursor syncing and manual placement.
Support for Series.heatRules in JSON chart config.
JSON config now supports arrays in events and adapter.

HTML labels now take fill (color) parameter into account by translating it into color CSS property of the style.
Now when data loader gracefully handles CORS and other critical load errors.
Chart.openPopup() now does not ignore second parameter. (title)
Changed default International English time with seconds format to "HH:mm:ss".
Date format on DateAxis tooltip will now use axis' minPeriod rather than current label period.
EventDispatacher.has() function's second parameter (callback) is now optional. If it's not specified it will check whether any event handlers are present for this particular event type.

Mouse/touch-related functionality was preventing text selection on the whole document.

Added examples in JSON format. (available in JS-oriented packages and GitHub only)
New events on ExportMenu: "branchselected", "branunselected", "closed".
Added Sprite.hoverOnFocus boolean setting. If set to true element will also trigger hover events on it when it gains focus, e.g. display tooltip. (accessibility feature)

Various internal things were not properly disposed.

Heights of vertical HeatLegend's gradient band and value axis (labels) were different.
HeatLegend without its series set was resulting in critical error.
HeatLegend did not respect dataField setting in Series.heatRules.

newStack from Series which was redundant.

New element class Popup.
New way to display pop-ups on charts via Sprite.popups and Sprite.openPopup.
New example "adding-live-data".
Added this CHANGELOG.md.

Fixed automatically-calculated RadarChart radius on non-full-circle chart setups.
Improved incremental data updates.

Internal maintenance release

Internal maintenance release

Internal maintenance release

Internal maintenance release

Internal maintenance release

createFromConfig() was not working properly if chart type was passed as a class reference.
In JSON-based config, axes properties were not being set.
In JSON-based config, referring to Series in XYChartScrollbar was giving an error.
One-ended SankeyLink was not being drawn correctly.

Internal maintenance release

Internal maintenance release

Internal maintenance release

Added ability to automatically load geodata via MapChart.geodataSource. (more info)

DateAxis.baseInterval now defaults to 1.

Fixed bad tooltip behavior on the right-side axis.
Fixed DateAxis.skipEmptyTimeUnits which was not working properly.

datastorm-open/rAmCharts4 documentation built on Oct. 13, 2019, 5:15 a.m.

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datastorm-open/rAmCharts4 JavaScript Visualization using 'amcharts4' Library

inst/htmlwidgets/lib/amcharts4/CHANGELOG.md In datastorm-open/rAmCharts4: JavaScript Visualization using 'amcharts4' Library

amCharts 4 Changelog

[4.4.8] - 2019-05-23

Added

Fixed

[4.4.7] - 2019-05-21

Changed

Fixed

[4.4.6] - 2019-05-14

Fixed

[4.4.5] - 2019-05-13

Changed

Fixed

[4.4.4] - 2019-05-08

Fixed

[4.4.3] - 2019-05-06

Added

Changed

Fixed

[4.4.2] - 2019-05-02

Added

Fixed

[4.4.1] - 2019-04-22

Changed

Fixed

[4.4.0] - 2019-04-17

Added

Fixed

[4.3.15] - 2019-04-16

Added

Changed

Fixed

[4.3.14] - 2019-04-13

Added

Fixed

[4.3.13] - 2019-04-10

Fixed

[4.3.12] - 2019-04-09

Changed

Fixed

[4.3.11] -2019-04-08

Added

Changed

Fixed

[4.3.10] - 2019-04-08

Changed

Fixed

[4.3.9] - 2019-04-06

Added

Changed

Fixed

[4.3.8] - 2019-04-05

Added

[4.3.7] - 2019-04-04

Fixed

[4.3.6] - 2019-04-04

Added

Changed

Fixed

[4.3.5] - 2019-03-29

Added

Fixed

[4.3.4] - 2019-03-28

Fixed

[4.3.3] - 2019-03-27

Fixed

[4.3.2] - 2019-03-26

Fixed

[4.3.1] - 2019-03-26

Fixed

[4.3.0] - 2019-03-26

Added

Changed

Fixed

[4.2.6] - 2019-03-21

Fixed

[4.2.5] - 2019-03-21

Added

Fixed

datastorm-open/rAmCharts4
JavaScript Visualization using 'amcharts4' Library

inst/htmlwidgets/lib/amcharts4/CHANGELOG.md
In datastorm-open/rAmCharts4: JavaScript Visualization using 'amcharts4' Library