I’ve always wondered about the statefp and statefp10 columns in the census block shape files. I’m pretty sure they mean that some census blocks belong to different states in 2010 vs 2013. 160 more words
Tags » PostGIS
The guys from Oslandia are really ripping things up in the PostGIS 3D world. (They are nice guys too– Olivier and Hugo had a skeletonization approach punched up and ready to test before I left the Boston Code Sprint this past Spring.) 58 more words
In an upcoming recipe (another one for the cutting room floor), we’ll play a bit with realistic biking distances, as compared with a 5-mile buffer (light grey), a 5-mile driving distance (dark grey), and a 5-mile biking-on-roads-with-speed-limits-under-40mph (purplish). 17 more words
One of the fastest ways of deploying the results of PostGIS queries on the web takes advantage of Geoserver SQL views.
The process is very straight forward once you have installed and configured a Geoserver. 920 more words