title: Geopandas ImportError: The descartes package is required for plotting polygons in geopandas
body: <p>I'am trying to run a simple geopandas code using ANACONDA spyder.  However, I'am encountering an error.</p>
  
  <p>I have included the code and the error as below:</p>
  
  <p>--</p>
  
  <p>here is the code:</p>
  
  <pre><code>import geopandas as gpd
  world = gpd.read_file(gpd.datasets.get_path('naturalearth_lowres'))
  world.plot()
  import matplotlib.pyplot as plt
  plt.show()
  </code></pre>
  
  <p>--</p>
  
  <p>here is the error:</p>
  
  <p>File "C:\Users\usr\Anaconda3\lib\site-packages\geopandas\plotting.py", line 90, in plot_polygon_collection
      "The descartes package is required for plotting polygons in geopandas."</p>
  
  <p>ImportError: The descartes package is required for plotting polygons in geopandas.</p>
  
  <p>--</p>
  
  <p>I checked online and I couldn't find troubleshooting solution for this problem. Can anyone please help and advise?</p>
  
  <p>appreciated.</p>