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Results tagged with python
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user 16814
Python is an open source interpreted programming language used in many GIS programs.
4
votes
2
answers
5k
views
Python GDAL/OGR: retrieved feature is NoneType
I'm doing some scripts in Python to deal with shapefiles, and I have an issue I don't understand. …
- 445
4
votes
4
answers
20k
views
Center of a bounding box
I have bounding box coordinates of my shapefile
(fetched from layer.GetExtent() Python with GDAL/OGR):
(-38.6102467739459, -38.017601026186576, 33.01563382506067, 33.624945228091406)
So I assume it's …
- 445
1
vote
1
answer
2k
views
Python GDAL/OGR: WGS84 & meters units
I'm dealing with shapefiles projected in:
GEOGCS["GCS_WGS_1984",
DATUM["WGS_1984",
SPHEROID["WGS_84",6378137,298.257223563]],
PRIMEM["Greenwich",0],
UNIT["Degree",0.01745329251994 …
- 445
7
votes
1
answer
10k
views
Python GDAL: degrees to meters without reprojecting
I am trying to get senseful results in my Python script. I want to measure distance between features in a shapefile. I'm working with the SRS: GCS_WGS_1984, so my units are in degrees. …
- 445
2
votes
1
answer
1k
views
Python GDAL: find out spikes and pits in DEM
I'm working with on a DEM (Geotiff) in Python GDAL, and I'd like to find out the spikes or pits in my terrain.
I have no idea how to proceed, does anyone have good algorithm to help me out? …
- 445
1
vote
0
answers
220
views
Python GDAL/OGR: check lines geometries connectivity
I'm working with shapefiles representing roads, so basically it's stored as (poly)lines.
I need to perform a road connectivity checking. In other words, I want to ensure that roads meant to communicat …
- 445
3
votes
3
answers
4k
views
Testing if geometry is inside another using OGR in Python?
I need to tell whether geometries from a shapefile are inside other geometries or not.
For example, I want to test if there are trees (represented as points in trees.shp) inside the urban areas (repre …
- 445
3
votes
1
answer
2k
views
Compare two Digital Elevation Model (DEM)
I'd like to do it in Python or C++, with GDAL or other similar lib.
Does calculating the RMSE (Root mean square error/deviation) is useful?
How to proceed to subtract DEM1 from DEM2? …
- 445