Folium
What is Folium?
Folium is a Python library for creating interactive Leaflet.js maps. It combines Python's data wrangling tools with Leaflet's mapping capabilities, so you can manipulate data in Python and render it directly as an interactive map, either as a standalone HTML file or inline in a Jupyter notebook.What is Folium?
Why Folium matters
Folium ships with several default tile sets, including OpenStreetMap, Mapbox variants, Stamen (Terrain, Toner, Watercolor), and CartoDB (positron and dark_matter), or you can supply a custom tile set URL. It also supports choropleth maps, where regions are shaded in proportion to a variable like population density or incident counts, and reads GeoJSON files directly for drawing region boundaries, which makes it a common choice for geospatial visualization and location intelligence work where the underlying data is already in Python.
Folium is a wrapper around Leaflet.js rather than a competing map library, so "Folium vs. Leaflet" isn't really a choice between alternatives: Folium is how you drive Leaflet from Python instead of writing JavaScript directly.
Domino supports Folium as part of its geospatial analysis tooling, alongside libraries like GeoPandas, so location-based visualizations run in the same governed compute environment as the rest of a project rather than a separate notebook or local setup.
How do you install Folium?
pip install folium
orconda install -c conda-forge folium
FAQ
What is Folium used for?
Folium is most commonly used for building interactive dashboards, exploring geographic data, and creating choropleth maps that visualize a variable (crime counts, sales, population) across regions.
Does Folium work in Jupyter notebooks?
Yes. Folium maps render inline in Jupyter Notebook by default, which is part of why it's a common choice for exploratory geospatial analysis.
Is Folium the same as Leaflet?
No. Leaflet is the underlying JavaScript mapping library. Folium is a Python interface to it, letting you build the same interactive maps without writing JavaScript.