ePie: Create an HTML pie charts widget using the...
In taiyun/recharts: An R Interface to ECharts

Description Usage Arguments Note Examples

This function creates an HTML widget to display data.frame and numeric array with name, using the JavaScript library ECharts3.

ePie(dat, namevar = NULL, datavar = NULL, size = NULL,
  reset_radius = c(20, 100), reset_center = c("50%", 200),
  showL = FALSE, labelformatter = NULL, type = c("pie", "rose"),
  roseType = c("radias", "area"), theme = "default", title = NULL,
  subtitle = NULL, title.x = "center", title.y = "top",
  legend = TRUE, legend.x = "left", legend.y = "top",
  legend.orient = "horizontal", toolbox = TRUE,
  toolbox.orient = "horizontal", toolbox.x = "right",
  toolbox.y = "top", dataView = TRUE, readOnly = FALSE,
  mark = TRUE, dataZoom = FALSE, magicType = FALSE, tooltip = TRUE,
  tooltip.trigger = "item", formatter = "", axis.scale = TRUE,
  xlab = FALSE, ylab = FALSE, calculable = TRUE, showLabel = TRUE,
  opt = list())

`dat`	a data object (a data frame or a factor array)
`namevar`	objects of class "formula" (or one that can be coerced to that class): the pie name of the given data.frame colnames, e.g. `namevar = ~pieName`; namevar only needed for the data.frame data input.
`datavar`	an "formula" object: Associates the value of variable with symbol color, e.g. `datavar = ~valueName`.
`size`	an array of html widget width and height(either numeric pixels or percentage could be accepted): e.g. size = c(1024, 768).
`reset_radius`	an objects of radius range of the graph,which has default value:c(20,100), you can modify the specific range of radius by setting the vector:reset_radius = c(a,b).
`reset_center`	an objects of the position of the graph,which has default valye:c("50 you can modify the specific range of radius by setting the vector such aas:reset_center = c("40",150).
`showL`	logitcal ,if T the data infomation should be shown in the middle of the graph,otherwise the middle of the graph should be empty.
`labelformatter`	an character object to control the specific content shown in the middle of the graph, e.g. `labelformatter = "{b}:{c}"`.
`type`	an option of c("pie", "rose"), the pie type of diplay widgets.
`roseType`	if the pie chart type is rose, this option will be available. and this option input should be one element of c("radias", "area").
`theme`	an object of theme name. see(http://datatables.net/extensions/index) for detail. supported theme: `c("default", "vintage", "dark", "westeros", "essos", "wonderland", "walden", "chalk", "infographic", "macarons", "roma", "shine", "purple-passion")`
`title`	an overall title for the plot. you can modify title widget after chart has been generated: Echart + eTitle(title = "your title.")
`title.x, title.y`	the xy coordinates of main title, besides the excat exact pixels value, x accept c("left", "right", "center") and y accept c("top", "bottom", "center") as legal input. you can modify title widget after chart has been generated: `Echart + eTitle(title="main title", x = "left", y=10)`
`legend`	logical whether the legend widget show or not, default is TRUE. you can modify legend widget after chart has been generated, the legend position and legend orientation are available at present. `Echart + eLegend(show = TRUE)`
`legend.x, legend.y`	the xy coordinates of legend, besides the excat exact pixels value, x accept c("left", "right", "center") and y accept c("top", "bottom", "center") as legal input. you can modify legend widget after chart has been generated: `Echart + eLegend(x = "right", y="top")`
`legend.orient`	an element of c("horizontal", "vertical"), default is "horizontal" you can modify legend widget after chart has been generated: `Echart + eLegend(orient = "vertical")`
`toolbox`	logical whether the toolbox widget show or not, default is TRUE. you can modify toolbox widget after chart has been generated, the toolbox position, toolbox element and toolbox orientation are available at present. `Echart + eToolbox(show = TRUE)`
`toolbox.orient`	an element of c("horizontal", "vertical"), default is "horizontal" you can modify toolbox widget after chart has been generated: `Echart + eToolbox(orient = "vertical")`
`toolbox.x, toolbox.y`	the xy coordinates of toolbox, besides the excat exact pixels value, x accept c("left", "right", "center") and y accept c("top", "bottom", "center") as legal input. you can modify toolbox widget after chart has been generated: `Echart + eToolbox(x = "right", y="top")`
`tooltip`	logical whether the tooltip widget for front-end interactive chart show or not. default is TRUE. you can modify tooltip widget after chart has been generated, the tooltip trigger and tooltip formatter is available at present. `Echart + eTooltip(show = FALSE)`
`tooltip.trigger`	an element of c("axis", "item"), default is "axis" for bar chart. "axis" option for trigger will show all the information of mouse; "item" option for tirgger will only show the given item information of mouse. you can modify tooltip widget after chart has been generated: `Echart + eTooltip(trigger = "axis")`
`calculable`	logical whether the front-end interactive chart will support the drag-recalculable feature. the size and calculable option can be setted after bar chart has been generated through eOption: `Echart + eOption(calculable = TRUE)`
`showLabel`	logical whether the region name label showed on chart. default is TRUE, e.g. `Echart + eOption(showLabel = TRUE)`
`dataview, mark, restore, dataZoom, magicType`	logical variable whether the dataview , mark, restore, dataZoom or magicType tool in toolbox widget show or not, default is TRUE. you can modify toolbox widget after chart has been generated, the toolbox position, toolbox element and toolbox orientation are available at present. `Echart + eToolbox(dataView = FALSE)`
`tooltip.formatter`	the information formatter for tooltip widget, default is "<a>:<b><c>" for bar chart. you can modify tooltip widget after chart has been generated: `Echart + eTooltip(formatter = "<a><b>:<c>")`

You are recommended to use lazyPlot function for interactive chart option set through "shiny" server.

x = runif(6)
names(x) = LETTERS[1:6]
ePie(x) + eTitle("test")
testData <- head(mapTestData_chs, 5)
ePie(testData, ~stdName, ~val1)
x = runif(6)
names(x) = LETTERS[1:6]
ePie(x,reset_radius = c(80,120),showL = TRUE)