Creating a population heat map with a colorbar and map title

Uncomment the following line to install leafmap if needed.

In [ ]:

# !pip install leafmap

The notebook requires the folium plotting backend. ipyleaflet is not supported.

In [ ]:

import leafmap.foliumap as leafmap

Creates an interactive folium map.

In [ ]:

m = leafmap.Map()

Specify the latitude, longitude, and value columns to create the heat map.

In [ ]:

in_csv = "https://raw.githubusercontent.com/opengeos/leafmap/master/examples/data/world_cities.csv"

Specify the file path to the CSV. It can either be a file locally or on the Internet.

In [ ]:

m.add_heatmap(
    in_csv,
    latitude="latitude",
    longitude="longitude",
    value="pop_max",
    name="Heat map",
    radius=20,
)

Adds a colorbar to the map.

In [ ]:

colors = ["blue", "lime", "red"]
vmin = 0
vmax = 10000

m.add_colorbar(colors=colors, vmin=vmin, vmax=vmax)

Adds a title to the map.

In [ ]:

m.add_title("World Population Heat Map", font_size="20px", align="center")

In [ ]:

Save the map as an HTML.

In [ ]:

m.to_html("heatmap.html")