I uploaded an update to the R script I posted earlier to import data downloaded from WorldClim into GRASS. The main change is that it unzips and imports one grid at a time into GRASS, thus requiring much less free space on your hard-disk.
It moreover has the option to import and convert the layer to the region settings of the mapset you are working in. Alternatively, you can import rasters in their original extend and resolution.
To run the script, start R from within GRASS GIS (on the command line, type R). In R, use the command source(“path-to-script-file”). This will create the function ‘import.wc.bil’.
This function has two arguments, the path to the folder with the downloaded zip files with WorldClim data and whether you want to use the extend and resolution of the file itself or that of the current mapset:
‘dr’ is the path to the folder where you keep your downloaded data. Using the default region=”raster” will import your data as it is, any other choice will import the layers using the region settings of the Mapset.
— Download script —
Read the information section in the script file (open in your text editor) for additional information. I am not sure it will work in Windows, let me know if not. And as usual, no guarantees, use the script at your own risk!