back to Recipes for EDA ["CookBook Eda"] The command files for gdal are in C:\OSGeo4W\share\gdal Similar content in rgal library in R but with less support best site for help is url:[http://www.bostongis.com/?content_name=ogr_cheatsheet] help for rgdal package url:[file:///C:/Program%20Files/R/R-2.10.0/library/rgdal/html/00Index.html]