Add interactive chart to folium map

Question

I want to add chart to folium map like below:

enter image description here

source: https://github.com/jupyter-widgets/ipyleaflet

But I cannot find any doc guiding to this. Can anyone help me with this?

I tried reading documentation in https://ipyleaflet.readthedocs.io/en/latest/usage/index.html but there is no luck. I expected to see some example code for adding chart to map (not adding chart to popup).

Answer 1

To add a chart to a map using Folium, you can follow these steps:

1. Install the folium library by running pip install folium in your terminal or command prompt.

2. Import the necessary libraries in your Python script:

import folium
from folium.plugins import MarkerCluster

3. Create a map object using the folium.Map() function:

m = folium.Map(location=[latitude, longitude], zoom_start=12)

Replace latitude and longitude with the coordinates of the center of your map.

4. Create a chart using your preferred charting library, such as matplotlib or seaborn. For example, let's create a simple bar chart:

import matplotlib.pyplot as plt

data = [10, 20, 30, 40, 50]
labels = ['A', 'B', 'C', 'D', 'E']

plt.bar(labels, data)
plt.xlabel('Categories')
plt.ylabel('Values')
plt.title('Chart Title')
plt.show()

5. Convert the chart to HTML using the mpld3 library:

import mpld3

chart_html = mpld3.fig_to_html(plt.gcf())

6. Create a marker on the map and attach the chart HTML to it:

marker = folium.Marker(location=[marker_latitude, marker_longitude])
marker.add_child(folium.Popup(chart_html))
marker.add_to(m)

Replace marker_latitude and marker_longitude with the coordinates of the marker's location.

7. Save the map as an HTML file:

m.save('map_with_chart.html')
Now, if you open the map_with_chart.html file in a web browser, you should see the map with the chart attached to the marker.