OSError geos_c could not be found when Installing Shapely
Solution 1
For questions 2-4, you have to have GEOS installed on your system. If you have homebrew you can do the following:
brew install geos
Install homebrew here if you don't have it: Link
Solution 2
On Ubuntu, to install GEOS
, this worked for me:
$ sudo apt-get install libgeos-dev
Solution 3
With OS X 10.11 (El Capitan) and Boxen, I had do do this:
brew install geos
sudo mkdir /opt/local
sudo ln -s /opt/boxen/homebrew/lib /opt/local/lib
to let Shapely find libgeos_c.dylib
in one of the locations it was willing to look for it.
Solution 4
The problem seems to be that you haven't actually installed the required modules.
Lines of Python code like
from mpl_toolkits.basemap import Basemap
Are import statements that tell your script to use modules (or other bits of Python code) that you need to have already installed.
For each of the packages mentioned (NumPy, Matplotlib, Basemap) you will have to figure out how to install them on your system. In the case of NumPy and Matplotlib this can be complicated because they require compilation. For instance these are theNumpy instructions.
If you just wanted to try playing with the instructions in that blog post then you could use a service like PythonAnywhere which has numpy, matplotlib, and basemap installed already. (disclaimer, I work on PythonAnywhere...)
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msunbot
Updated on July 09, 2022Comments
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msunbot almost 2 years
I'm a newbie to making/plotting on maps with python, been trying to follow this blogpost to generate a world map ( http://sciblogs.co.nz/seeing-data/2011/08/12/plotting-geographic-data-on-a-world-map-with-python/ ). Got stuck with a few things here:
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Installing Basemap (a Matplotlib extension for plotting data on geographic projections).
from mpl_toolkits.basemap import Basemap Traceback (most recent call last): File "geos_demo.py", line 1, in <module> from mpl_toolkits.basemap import Basemap ImportError: No module named mpl_toolkits.basemap
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Install Shapely, but the following error occurs [1]:
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Then I went into the geos.py file and change all the references of geos.dll to geos_c.dll, as recommended by the link here: http://osgeo-org.1560.n6.nabble.com/osgeo4w-258-Problems-with-python-shapely-python-2-7-2-td4336816.html
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However, the same error [1] occurs.
I'm using Python 2.7.1 and Mac OS 10.7.4. Please let me know if I can provide additional information, and really appreciate any guidance from the community here! Thanks!
[1]
from shapely.geometry import Point Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/Users/Desktop/python/ENV/lib/python2.7/site-packages/shapely/geometry/__init__.py", line 4, in <module> from geo import box, shape, asShape, mapping File "/Users/Desktop/python/ENV/lib/python2.7/site-packages/shapely/geometry/geo.py", line 5, in <module> from point import Point, asPoint File "/Users/Desktop/python/ENV/lib/python2.7/site-packages/shapely/geometry/point.py", line 7, in <module> from shapely.coords import required File "/Users/Desktop/python/ENV/lib/python2.7/site-packages/shapely/coords.py", line 8, in <module> from shapely.geos import lgeos File "/Users/Desktop/python/ENV/lib/python2.7/site-packages/shapely/geos.py", line 59, in <module> _lgeos = load_dll('geos_c', fallbacks=alt_paths) File "/Users/Desktop/python/ENV/lib/python2.7/site-packages/shapely/geos.py", line 44, in load_dll libname, fallbacks or [])) OSError: Could not find library geos_c or load any of its variants ['/Library/Frameworks/GEOS.framework/Versions/Current/GEOS', '/opt/local/lib/libgeos_c.dylib']
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msunbot over 11 yearsThanks @aychedee. I have installed numpy and but could not figure out basemap. Does PythonAnywhere help install basemap together with the other libraries?
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aychedee over 11 yearsHi Michelle, actually basemap is already installed as a standard package. The only difference in getting that tutorial to complete would be that you would have to save the plot as a file and then download it rather than displaying it directly.
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tommy.carstensen over 9 yearsI still get the same error after doing brew install geos: OSError: Could not find library geos_c or load any of its variants ['/Library/Frameworks/GEOS.framework/Versions/Current/GEOS', '/opt/local/lib/libgeos_c.dylib']
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user1718097 about 7 yearsI had a problem getting cartopy to run with fink-installed libgeos and had to use this trick to resolve the problem - thanks for the hint!
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Nishant Bhindi about 6 yearsi have same problem after installing geos using brew install geos.its show Could not find lib geos_c or load any of its variants.
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Aaron Bramson over 5 yearsWould you please provide more detail on step 2? Which path? Where? How?
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Jozef Cechovsky over 5 yearsinstall OSGeo4 from page trac.osgeo.org/osgeo4w ... then add folder where you installed OSGeo4 to your PATH e.g. stackoverflow.com/questions/44272416/…
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avelino about 2 yearsJace's recommendation solved the problem