spatial

ValueError: Query missing geometry column 'geom' Question: I am trying to count the area of the area that is less than 500 units away from the shortest line connecting factory A and station B. I am trying to query the PostGIS spatial database in Python, but I get an error: ValueError: Query missing geometry column …

Inverse Distance Weighted (IDW) Interpolation with Python Question: The Question: What is the best way to calculate inverse distance weighted (IDW) interpolation in Python, for point locations? Some Background: Currently I’m using RPy2 to interface with R and its gstat module. Unfortunately, the gstat module conflicts with arcgisscripting which I got around by running RPy2 …