2
votes
2answers
606 views

How to get JSON representation from JTS Geometry?

I'm using JTS (http://www.vividsolutions.com/jts/JTSHome.htm) and need to get a JSON representation of a Point : Hibernate beam: @Type(type = "org.hibernate.spatial.GeometryType") ...
2
votes
1answer
624 views

GeoTools and PostGIS with ESPG:3857

I'm trying to use both PostGIS and GeoTools with the same ESPG:3857 projection, however, it looks like the projections in PostGIS and GeoTools differ. This is what I have in PostGIS: PROJCS["WGS 84 ...
5
votes
3answers
337 views

Trying to combine nearby points into a polygon

We have collected millions of cell phone strength readings. I am trying to group points of the same strenght that are within a distance of each other in to a polygon. I asked on the postgis mailing ...
8
votes
0answers
257 views

Solutions for fast operations on large GIS datasets [duplicate]

Possible Duplicate: Acquiring ArcGIS-like speed in Postgis I have been using PostGIS 2.0 for all of my GIS operations. PostGIS is an excellent GIS database, but no matter how I format my ...