Python, GEOS and Shapely on Windows 64

Question

When trying to install Shapely on my Windows 64bit computer, I cannot get the GEOS library to work.

So far, I have run the OSGeo4W installer from which I installed GDAL (I believe the geos library is included in that package). After that, I checked and I have geos_c.dll on my C:\OSGeo4W\bin directory, but either I have missed some configuration steps or the library does not work.

I need Shapely to work, so I also ran pip install shapely after installing GDAL, and it apparently worked (although it could not find the C library for GEOS).

In my code, I can import Shapely, but when I try to use it, I get an error telling me "geos.dll" is not found.

Any help with this will be very appreciated. Thanks!

Answer 1

Anaconda/Miniconda users should install Shapely (and dependencies) with:

conda install shapely 

As of 2020, other Python users can install binary wheels from PyPI with pip:

pip install shapely 

(you may need --upgrade to get at least version 1.7.0, when binary wheels were added.) Note that binary wheels are not available for Python 2 on Windows.

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Another resource for Windows users with Python installed from python.org, Christoph Gohlke maintains an excellent pool of Unofficial Windows Binaries for Python. Download the Shapely wheels for 32- or 64-bit versions of Python, which includes GEOS dependencies.

Answer 2

see my answer here https://stackoverflow.com/a/50623996/1683626

on windows 10, python 3.6.5 64bit

• install osgeo4w
• add installed folder to path e.g. C:\OSGeo4W64\bin (must contain geos_c.dll)
• restart command line