title: Why does mapping in Folium with over 100 Circle Markers result in a blank map?
body: <p>I'm working on producing a series of maps for an animated presentation using Folium and my code (when plotting over 100 circles) always ends in a blank map. If I decrease the number of circles to 100 or below, it works perfectly. Is this a folium limitation or something I can change on my local machine with Java or Browser settings? I'm using python in jupyter notebook in chrome on Ubuntu.
  merged_hourly is a pandas df with nyc foottraffic data for specific stations, lat, long, etc.</p>
  
  <p>Exported Dataframe is located here as a spreadsheet: <a href="https://docs.google.com/spreadsheets/d/1XroOBPUWOqZsy-l1dwcR1iuOIn9ln69ylO16_Sqa9yc/edit?usp=sharing" rel="nofollow noreferrer">https://docs.google.com/spreadsheets/d/1XroOBPUWOqZsy-l1dwcR1iuOIn9ln69ylO16_Sqa9yc/edit?usp=sharing</a></p>
  
  <pre><code># iterates columns in df
  for myint in range(0,241):
      # iterates rows in df. should go to ~289, but will make a blank map
      for i in range(0,101):
          # sets some variables from the df
          R=merged_hourly[str(myint/10)][i]*.15
          lat=merged_hourly['Station_Latitude'][i]
          long=merged_hourly['Station_Longitude'][i]
          stname=merged_hourly['Station_Name'][i]
          # plots the CircleMarker
          folium.CircleMarker([lat, long], radius=R, popup=stname, color='#3186cc', 
                              fill_color='#3186cc',fill=True,
                              fill_opacity= .7).add_to(map_final)
      # saves a map with all the circle markers in a row
      map_final.save("FilePath/"+str(myint)+'.html')
      map_final=5
      map_final=folium.Map(location=[40.775036, -73.912034], zoom_start=11.25)
  </code></pre>