OSError: could not find or load spatialindex_c.dll

Question

I have installed the whl files for fiona, shapely, gdal, rtree and pyproj. Geopandas is also installed via pip install. But I get the following error when importing it:

import geopandas
Traceback (most recent call last):

  File "<ipython-input-14-c9ee6bd24dbc>", line 1, in <module>
    import geopandas

  File "C:\ProgramData\Anaconda3\lib\site-packages\geopandas\__init__.py", line 1, in <module>
    from geopandas.geoseries import GeoSeries

  File "C:\ProgramData\Anaconda3\lib\site-packages\geopandas\geoseries.py", line 12, in <module>
    from geopandas.base import GeoPandasBase, _series_unary_op, _CoordinateIndexer

  File "C:\ProgramData\Anaconda3\lib\site-packages\geopandas\base.py", line 14, in <module>
    from rtree.core import RTreeError

  File "C:\ProgramData\Anaconda3\lib\site-packages\rtree\__init__.py", line 1, in <module>
    from .index import Rtree

  File "C:\ProgramData\Anaconda3\lib\site-packages\rtree\index.py", line 5, in <module>
    from . import core

  File "C:\ProgramData\Anaconda3\lib\site-packages\rtree\core.py", line 116, in <module>
    raise OSError("could not find or load spatialindex_c.dll")

OSError: could not find or load spatialindex_c.dll

and the following error as well:

import fiona
Traceback (most recent call last):

  File "<ipython-input-16-cc872b235141>", line 1, in <module>
    import fiona

  File "C:\ProgramData\Anaconda3\lib\site-packages\fiona\__init__.py", line 77, in <module>
    from fiona.collection import Collection, BytesCollection, vsi_path

  File "C:\ProgramData\Anaconda3\lib\site-packages\fiona\collection.py", line 9, in <module>
    from fiona.ogrext import Iterator, ItemsIterator, KeysIterator

  File "fiona\ogrext.pyx", line 25, in init fiona.ogrext

ImportError: cannot import name compat

Can somebody please help me here? I'm not being able to figure out how to fix this issue. Thanks and regards.

Answer 1

You could try the installation with conda instead of pip.

conda install -c conda-forge cenpy

See the CenPy documentation: https://pypi.org/project/cenpy/

You don't need to separately install geopandas and Rtree if you use conda.