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How to draw a GeoPandas.GeoDataFrame into folium

GeoPandas is a project to add support for geographic data to pandas objects. (See https://github.com/geopandas/geopandas)

It provides (among other cool things) a GeoDataFrame object that represents a Feature collection. When you have one, you may be willing to use it on a folium map. Here's the simplest way to do so.





In [1]:



    


%matplotlib inline
import geopandas

import sys
sys.path.insert(0,'..')

import folium
folium.__file__



    


















    
Out[1]:








'../folium/__init__.py'

In this example, we'll use the same file as GeoPandas demo ; it's containing the boroughs of New York City.





In [2]:



    


boros = geopandas.GeoDataFrame.from_file('nybb.shp')
boros



    


















    
Out[2]:










  
    

      
      BoroCode
      BoroName
      Shape_Area
      Shape_Leng
      geometry
    

  
  
    

      0
      5
      Staten Island
      1.623847e+09
      330454.175933
      (POLYGON ((970217.0223999023 145643.3322143555...
    

    

      1
      3
      Brooklyn
      1.937810e+09
      741227.337073
      (POLYGON ((1021176.479003906 151374.7969970703...
    

    

      2
      4
      Queens
      3.045079e+09
      896875.396449
      (POLYGON ((1029606.076599121 156073.8142089844...
    

    

      3
      1
      Manhattan
      6.364308e+08
      358400.912836
      (POLYGON ((981219.0557861328 188655.3157958984...
    

    

      4
      2
      Bronx
      1.186822e+09
      464475.145651
      (POLYGON ((1012821.805786133 229228.2645874023...

To create a map with these features, simply put them in a GeoJson:





In [3]:



    


m = folium.Map([40.7,-74], zoom_start=10, tiles='cartodbpositron')

folium.GeoJson(boros).add_to(m)

m



    


















    
Out[3]: