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Results tagged with python
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user 960
Python is an open source interpreted programming language used in many GIS programs.
-1
votes
update one shapefile attribute table with values from another dbf table
Sorry for not answering your question, but I would definitely do this in db-environment instead. Especially if it is a lot of data, then that will probably be a lot faster.
If you for instance load t …
- 13.3k
4
votes
Nearest neighbor between point layer and line layer?
If I understand you right the functionality you are asking for is built in PostGIS.
To get a point projected on a line you can use ST_Closestpoint (on PostGIS 1.5)
Some hints about how to use it yo …
- 13.3k
2
votes
Finding polygons crossed by line using OGR?
think you are on the wrong trac ;)
Both because you are missing to check if the edge between the vertexpoints intersects the polygon and because you are moving the iteration between the vertex points to python …
- 13.3k
2
votes
How to bring polygons closer to a point?
making the polygons bigger should give the desired effect.
http://postgis.net/docs/manual-1.5/ST_Scale.html
/Nicklas
- 13.3k
8
votes
How to use PostGIS to handle complex geoprocessing workflows?
I really like using PostGIS for geoprocessing purposes.
My two main resons is:
1) It is often very much faster to do complex tasks in the database because you get the help of the query planner to d …
- 13.3k
3
votes
Calculate centroid of a point cluster
I am not sure I really understand what you are doing.
How can a point cluster be a collection of linestrings?
, but ..
Remember you are using a spatial database, why not use the functionality in PostG …
- 13.3k