Making maps in R using ggplot,

Here is a new post, one click away, on how to make maps using the functions implemented by ggplot: http://rpubs.com/Lionel/5242

A little change in the blog,

From now on every R related post will be posted there: http://rpubs.com/Lionel Since it is very nice and easy for me to upload R code and graphics using Rmarkdown files to this website (easier than to work with wordpress), I will still make notice from this blog.

Taking control of the legend in raster (in R)

The basic default options of the raster package depict well continous data but when plotting caterogical data on maps like land use or species presence/absence other tricks should be used, below is some code to work around this. library(raster) ## Loading required package: sp ## raster 2.0-41 (21-December-2012) #create a raster of species presence/absence r …