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!

Groff

What version of windows are you using? – Andres

Maybe you could use an installer at the bottom of this page. That should include geos. – Andres

Cool! Add this as an answer so I can accept it, please. – Groff

In my case, I had to switch to a lower (3.10 to 3.9) Python version – Aroid

Answer 1

Anaconda/Miniconda/Miniforge 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.

---

Another resource is Christoph Gohlke's Geospatial library wheels for Python on Windows releases on GitHub. Download the latest Shapely wheels from here, e.g., shapely-2.0.1-cp39-cp39-win_amd64.whl for 64-bit Python 3.9.

Meteoritics

Make sure you install the version that matches your Python installation, NOT your OS. I made the mistake of installing the 64 bit shapely since I'm running 64 bit Windows, but my Python is 32 bit, and it gave me a similar "geos_c.dll" is not found. – Hooknose

Answer 2

see my answer here https://mcmap.net/q/189917/-oserror-geos_c-could-not-be-found-when-installing-shapely-duplicate

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

Downtrodden

Answer 3

There is an version of Shapely available here that includes geos in the installer. Look at the bottom of the page.

Andres

This version is from 2010-04-13, and was compiled for 32-bit Python 2.4, 2.5 and 2.6. – Meteoritics

you can find newer versions by modifying the version number in the url. E.g. version 1.3.0 is from 2014 and works with python 2.7 and 3.3 – Boccioni

Answer 4

I tried the method of @jozef but failed even I imported the folder to the path.

A straightforward solution: add geos_c.dll, geos.dll to the library folder of your python environment. Then it works.

Whilom

fastest fix, not sure that is se cleanest tho – Crozier

You can download the dll at dll-files.com/geos_c.dll.html – Yang

Answer 5

I used the command below and it did work;

pip install Shapely==1.3.0

Smaragdine

Answer 6

I've made it installing wheels for GDAL (and Fiona, in my case; might not be required) from https://www.lfd.uci.edu/~gohlke/pythonlibs/#gdal Providing a path to the geos_c.dll didn't work. Neither putting them into venv/Lib.

Tieback