问题
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!
回答1:
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.
Anaconda is a popular resource to install precompiled Python packages. Shapely for win-64 is available from several of the main channels. This is a recommended method if you require lots of up-to-date Python software, and are happy to use Python from a 3rd party vendor.
回答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
回答3:
There is an version of Shapely available here that includes geos in the installer. Look at the bottom of the page.
回答4:
I used the command below and it did work;
pip install Shapely==1.3.0
来源：https://stackoverflow.com/questions/13144158/python-geos-and-shapely-on-windows-64