RgoogleMaps (version 1.2.0.6)

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

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

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)