Note: to see these maps execute these commands on your local machine
- Create a map centered at an inputted location
- Create points on the map
- Try out some of folium’s other features
import folium from folium.plugins import MarkerCluster import pandas as pd
Show Map Centered at a Point
The most fundamental part of creating an interactive map is to allow users to input a location and view that location on the map; imagine how difficult it’d be to scroll/zoom to each specific point you want to view! Let’s create a map and center it at a specific geographic point such as Boulder, Colorado.
#Define coordinates of where we want to center our map boulder_coords = [40.015, -105.2705] #Create the map my_map = folium.Map(location = boulder_coords, zoom_start = 13) #Display the map my_map
Adding Markers to the Map
Now that we’re able to display a map centeret at a point of our choosing, we can try adding some more content to the map via markers. Markers can be extremely useful for storing information about locations on the map such as cross streets, building information, etc. Using the same map, let’s add markers indicating where CU Boulder is as well as East Campus and the SEEC building.
#Define the coordinates we want our markers to be at CU_Boulder_coords = [40.007153, -105.266930] East_Campus_coords = [40.013501, -105.251889] SEEC_coords = [40.009837, -105.241905] #Add markers to the map folium.Marker(CU_Boulder_coords, popup = 'CU Boulder').add_to(my_map) folium.Marker(East_Campus_coords, popup = 'East Campus').add_to(my_map) folium.Marker(SEEC_coords, popup = 'SEEC Building').add_to(my_map) #Display the map my_map
Leaflet (or folium for our purposes) has some other pretty great features that you may find useful. There are some great tutorials that can be found online with examples that should be easily adaptable to your code. Additionally, folium can work with pandas dataframes in order to overlay data onto the interactive map.
#Adding a tileset to our map map_with_tiles = folium.Map(location = boulder_coords, tiles = 'Stamen Toner') map_with_tiles
#Using polygon markers with colors instead of default markers polygon_map = folium.Map(location = boulder_coords, zoom_start = 13) CU_Boulder_coords = [40.007153, -105.266930] East_Campus_coords = [40.013501, -105.251889] SEEC_coords = [40.009837, -105.241905] #Add markers to the map folium.RegularPolygonMarker(CU_Boulder_coords, popup = 'CU Boulder', fill_color = '#00ff40', number_of_sides = 3, radius = 10).add_to(polygon_map) folium.RegularPolygonMarker(East_Campus_coords, popup = 'EastCampus', fill_color = '#bf00ff', number_of_sides = 5, radius = 10).add_to(polygon_map) folium.RegularPolygonMarker(SEEC_coords, popup = 'SEEC Building', fill_color = '#ff0000', number_of_sides = 8, radius = 10).add_to(polygon_map) #Display the map polygon_map