geojsonMap: Load amap to leaflet

In leafletCN: An R Gallery for China and Other Geojson Choropleth Map in Leaflet

Description

Simple function like addTiles()

Usage

geojsonMap(dat, mapName, namevar=NULL, valuevar=NULL,
  palette = "Blues", colorMethod = "numeric",
  na.color = "#808080", popup = NULL, stroke = T, smoothFactor = 1,
   weight = 1, fillOpacity = 0.7, legendTitle = "Legend", tileType, ...)

Arguments

dat	a data.frame contain regions and values
mapName	mapName for loading, eg. 'china', 'city', ...
namevar	show which feature is chosen for name variable
valuevar	show which featue is chosen for value variable
palette	The colors or color function that values will be mapped to, see RColorBrewer::display.brewer.all()
colorMethod	set one of the coloe mapping in c("numeric", "bin", "quantile", "Factor")
na.color	The color to return for NA values. Note that na.color=NA is valid.
popup	a character vector of the HTML content for the popups (you are recommended to escape the text using htmlEscape() for security reasons)
stroke	whether to draw stroke along the path (e.g. the borders of polygons or circles)
smoothFactor	how much to simplify the polyline on each zoom level (more means better performance and less accurate representation)
weight	stroke width in pixels
fillOpacity	fill opacity
legendTitle	legend title
tileType	function to define tile like amap or leaflet::addTiles
...	other paramter pass to the color mapping function

Examples

dat = data.frame(name = regionNames("china"),
                 value = runif(34))
geojsonMap(dat,"china")

dat$value2 = cut(dat$value, c(0, 0.25, 0.5, 1))
geojsonMap(dat,"china",
  namevar = ~name,
  valuevar = ~value2,
  palette="Reds",
  colorMethod="factor")

geojsonMap(dat,"china",
  namevar = ~name,
  valuevar = ~value2,
  palette = topo.colors(3),
  colorMethod="factor")

Example output

leafletCN documentation built on May 1, 2019, 9:21 p.m.