I'm working on some code for quickly pulling together shapefile data and other data (statistics, etc) and spitting out maps. That means JOINs. Thanks to the 1990-quality standards of GIS, attribute tables are in dbf files. How does one deal with these blasts from the past? [more inside]
posted by tmcw on Apr 28, 2009 - 5 answers

Map geeks: can I generate a polygon shapefile from the outline of a large collection of points? There's more detail, of course. [more inside]
posted by genghis on Jun 26, 2007 - 17 answers