title: GeoPandas: Plot two Geo DataFrames over each other on a map
body: <p>I am new to using Geopandas and plotting maps from Geo Dataframe. I have two Geo DataFrames which belong to the same city. But they are sourced from different sources. One contains the Geometry data for houses and another for Census tracts. I want to plot the houses' boundary on top of the tract boundry.</p>
  <p>Below is the first row from each data set. I am also not sure why the Geometry Polygon values are on such a different scale in each of these datasets.</p>
  <ol>
  <li>Houses Data Set
  <a href="https://i.stack.imgur.com/me8Bb.png" rel="nofollow noreferrer">House Data</a></li>
  <li>Tract Data Set
  <a href="https://i.stack.imgur.com/pY04h.png" rel="nofollow noreferrer">Tract Data</a></li>
  </ol>
  <p>I tried the following code in the Jupyer Notebook but nothing is showing up.</p>
  <pre><code>f, ax = plt.subplots()
  tract_data.plot(ax=ax)
  house_data.plot(ax=ax)
  </code></pre>
  <p>But an empty plot shows up.</p>
  <p>This is my first post. Please let me know what else I can provide.</p>