title: Folium heatmap not displaying in Jupiter notebook in Internet Explorer
body: <p>I am trying to plot a heatmap similar to the one from <a href="https://alysivji.github.io/getting-started-with-folium.html" rel="nofollow noreferrer">https://alysivji.github.io/getting-started-with-folium.html</a>. The output should look something like this picture but for the area of the North Sea.</p>
  
  <p><a href="https://i.stack.imgur.com/Ak28G.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Ak28G.jpg" alt="enter image description here"></a></p>
  
  <p>However when I try to plot the colorfull dots over the map, Jupyter notebooks output is blank.
  This my code:</p>
  
  <pre><code>import folium
  from folium import plugins
  import pandas as pd
  import matplotlib.pyplot as plt
  import seaborn as sns
  
  m = folium.Map([52.5, 2], zoom_start=5.5)
  m
  </code></pre>
  
  <p>Gives me this, which is what I want:</p>
  
  <p><a href="https://i.stack.imgur.com/SdSME.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/SdSME.png" alt="enter image description here"></a></p>
  
  <p>Now I want to add 10 dots to the map, my data and code is the following:</p>
  
  <pre><code>divvyStations =df = pd.DataFrame({'Xpos': Xpos1[0], 'Ypos': Ypos1[0],'Density': Density})
  print(divvyStations)
  </code></pre>
  
  <p>OUT:</p>
  
  <pre><code>   Density      Xpos       Ypos
  0        1 -3.758242  50.099575
  1        1 -3.780331  50.110645
  2        1 -3.740984  50.113747
  3        1 -3.802421  50.121719
  4        1 -3.763073  50.124821
  5        1 -3.723726  50.127922
  6        1 -3.824510  50.132793
  7        1 -3.785162  50.135895
  8        1 -3.745815  50.138992
  9        1 -3.706468  50.142094
  </code></pre>
  
  <p>And then I try to plot the points:</p>
  
  <pre><code>for index, row in divvyStations.iterrows():
     folium.CircleMarker([row['Ypos'],row['Xpos']],
                      radius=15,
                      #popup=row['Density'],
                      fill_color="#3db7e4", # divvy color
                     ).add_to(m)
  m
  </code></pre>
  
  <p>Which gives me this nice screen:
  <a href="https://i.stack.imgur.com/Ypttp.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Ypttp.png" alt="enter image description here"></a></p>
  
  <p><strong>Why is there no map?</strong></p>
  
  <p>I already checked questions: <a href="https://stackoverflow.com/questions/36969991/folium-map-not-displaying">Folium map not displaying</a>, <a href="https://stackoverflow.com/questions/47047826/python-folium-map-not-displaying">Python Folium Map Not Displaying</a></p>
  
  <p>Thanks in advance!</p>