title: Choropleth map from Shape file in Holoviews
body: <p>I have a shape file with a column named geometry containing MULTIPOLYGONs.</p>
  
  <pre><code>postcode    name    geometry
  0   2003.0  A   MULTIPOLYGON Z (((1048559.000 7841160.000 0.00...
  1   1438.0  B   MULTIPOLYGON Z (((-29156.720 6885495.170 0.000...
  </code></pre>
  
  <p>While it is straight forward to draw a map in matplotlib with GeoPandas, I can not get it to work in Holoviews. The example-script from Holoviews (<a href="http://holoviews.org/gallery/demos/bokeh/texas_choropleth_example.html" rel="nofollow noreferrer">http://holoviews.org/gallery/demos/bokeh/texas_choropleth_example.html</a>) don't really solve the question of how to structure the data.</p>
  
  <p>I have tried to read the shape file with GeoPandas without luck. What am I missing here? Do I need to decode the geometry column first?</p>