RgoogleMaps (version 1.2.0.6)

SpatialToPBS: converts spatial objects as defined in package sp to simpler PBSmapping type dataframes

Description

The PlotPolysOnStaticMap() function currently does not take sp objects directly but instead needs PBSmapping type data.frames. This function converts sp objects into such.

Usage

SpatialToPBS(xy, verbose = 0)

Arguments

xy

spatial object, such as SpatialPoints, SpatialPolygons, etc..

verbose

level of verbosity

Value

• list with elements xy = converted object, bb = bounding box, fun = plot function

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 = file.path(tempdir(),"NYstate.png"), 

                  maptype = "mobile", zoom=9)

  #mapNY=ReadMapTile("NYstate.png")

  clrStuff=ColorMap(100*cases/population, alpha = 0.35, log = TRUE)

  NYpolys = SpatialToPBS(NYleukemia$spatial.polygon)

  PlotPolysOnStaticMap(mapNY, NYpolys$xy, col = clrStuff$colcode, add = FALSE)

  legend("topleft", legend = clrStuff$legend, fill = clrStuff$fill, 

         bg = rgb(0.1,0.1,0.1,0.3))

}