title: Installing RTree and geopandas in windows 10 64 bit OS
body: <p>I tried installing geopandas in python 3.6 with no error but when I import the module in python I got this error.</p>
  
  <p>could not find or load spatialindex_c.dll</p>
  
  <p>The same thing happens to RTree, displaying also the same error, but has installed correctly using the following commands:</p>
  
  <p>For geopandas:</p>
  
  <p>pip install geopandas-0.4.0-py2.py3-none-any.whl</p>
  
  <p>For RTree:</p>
  
  <p>pip install Rtree-0.8.3-cp36-cp36m-win_amd64.whl</p>
  
  <p>What could be the problems with these? </p>
  
  <p>The following libraries have already been installed and are working: gdal, fiona, scipy, missingno, shapely, pysal, numpy, pandas and matplotlib.</p>