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Sage: How to import a graph from a shapefile into Sage?

asked 2014-09-26 06:52:24 -0500

Melanie gravatar image

I would like to import a graph and afterwards use functions from the networkx library in the Sage Notebook. Python is totally new for me and I have not that much experience with programming. How to transfer a shapefile into Sage? I tried

import networkx as nx 

g=nx.read_shp(r‘D:\Useres\...\ver06_l.shp’)

That gives

ImportError: read_shp requires OGR: http://www.gdal.org/

Unfortunately, this link doesn’t help me. Thank you in advance

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Looks like this requires a special library to be loaded.

calc314 gravatar imagecalc314 ( 2014-09-27 08:48:44 -0500 )edit

Well, it's not clear how exactly you run Sage. Do you run it in a VM on Windows?

Dima gravatar imageDima ( 2014-09-27 14:46:26 -0500 )edit
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installing gdal is not easy. You might be better off doing a conversion of shapfiles into networkx graphs in an installation of Python with gdal installed, and writing these graphs into files; and then read the latter files in Sage.

Dima gravatar imageDima ( 2014-09-28 04:07:37 -0500 )edit

Yes, I run it in the Oracle VM. Thanks for your answers!

Melanie gravatar imageMelanie ( 2014-10-08 04:40:15 -0500 )edit

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answered 2014-10-13 08:20:08 -0500

try https://github.com/GeospatialPython/p... to import shapefiles. At least it goes around the gdal. I don't know how to hook it up with networkx, but it's a start.

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Asked: 2014-09-26 06:52:24 -0500

Seen: 315 times

Last updated: Oct 13 '14