RgoogleMaps (version 1.2.0.2)

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],
...)

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

...

extra args to pass to PlotPolysOnStaticMap

Examples

data(NYleukemia)
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)