ColorMap: Plot Levels of a Variable in a Colour-Coded Map

In RgoogleMaps: Overlays on Static Maps

Description

Plot Levels of a Variable in a Colour-Coded Map

Usage

ColorMap(values, map = NULL, polys = NULL, log = FALSE, nclr = 7, 


    include.legend = list(TRUE), round = 3, brks = NULL, legend = NULL, 


    location = "topright", rev = FALSE, alpha = 0.5, GRAY = FALSE, 


    palette = c("YlOrRd", "RdYlGn", "Spectral")[1], textInPolys = NULL, 


    ...)

Arguments

values	variable to plot
map	map object
polys	an object of class SpatialPolygons (See SpatialPolygons-class
log	boolean of whether to plot values on log scale
nclr	number of colour-levels to use
include.legend	boolean of whether to include legend
round	number of digits to round to in legend
brks	if desired, pre-specified breaks for legend
legend	if desired, a pre-specified legend
location	location of legend
rev	boolean of whether to reverse colour scheme (darker colours for smaller values)
alpha	alpha value of colors
GRAY	boolean: if TRUE, use gray scale instead
palette	palette to choose from RColorBrewer
textInPolys	text to be displayed inside polygons. This can be a column names for values
...	extra args to pass to PlotPolysOnStaticMap

Author(s)

Markus Loecher

Examples

  if (interactive()){


  data("NYleukemia", envir = environment())


  population <- NYleukemia$data$population


  cases <- NYleukemia$data$cases


  mapNY <- GetMap(center=c(lat=42.67456,lon=-76.00365), destfile = "NYstate.png", 


                  maptype = "mobile", zoom=9)


  ColorMap(100*cases/population, mapNY, NYleukemia$spatial.polygon, add = FALSE,


           alpha = 0.35, log = TRUE, location = "topleft")


}


  #ColorMap(100*cases/population, map=NULL, NYleukemia$spatial.polygon)


  

RgoogleMaps documentation built on May 2, 2019, 5:03 p.m.