All Questions
4 questions
2
votes
0
answers
651
views
'.Simplify' causes 'null geometry' errors (Python, OGR)
Question relates to an earlier one: Can't retrieve geometry (Python, OGR, Rtree)
Im trying to simplify a dataset with 180k+ polygons and place the simplified geometries in a separate dataset. ...
- 506
2
votes
1
answer
5k
views
How to use OGR Simplify in Python
I am trying to simplify several polygons part of one shapefile using Python and OGR. However, I am stuck with how to use the simplify function as mentioned in the documentation:
http://www.gdal.org/...
- 506
12
votes
1
answer
2k
views
ogr2ogr (or other) simplification of polygons with shared boundaries
I am trying to simplify a collection of 100,000 or so polygons containing nearly 4 million vertices. The data is stored in a 2GB shapefile so there is no explicit representation of the topology ...
- 221
5
votes
1
answer
2k
views
ogr SimplifyPreserveTopology does not keep the Topology
I use ogr2ogr to simplify a layer of polyline, from the document:
-simplify tolerance: (starting with GDAL 1.9.0) distance tolerance for simplification. This method will preserve topology, in ...
- 803