RgoogleMaps (version 1.5.1)

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.

THANKS TO Fabio Priuli for a major bug fix w.r.t. holes in spatial polygons!

Usage

SpatialToPBS(xy, verbose = 0)

Value

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

Arguments

xy

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

verbose

level of verbosity

Author

Markus Loecher

Examples

  if (0) {


    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))


}