Leaflet Bivariate Choropleth
A bivariate choropleth map encodes two variables at once on the same set of regions using a 3×3 color matrix — typically one hue for variable A (e.g. income), a second hue for variable B (e.g. education), and a third blended hue where both are high. Each region's fill color is th
Template details
- map
- choropleth
- bivariate
- two-variable
- leaflet
- geospatial
When to use this template
This visualization excels at revealing the spatial interplay between two quantitative variables across a set of geographic regions. Analysts use it to quickly identify areas where two phenomena co-occur, diverge, or show independent patterns, providing a nuanced understanding of their geographic relationship.
- Geographic data with distinct, non-overlapping regions.
- Two quantitative variables assigned to each region.
- Variables whose distributions can be meaningfully categorized (e.g., into terciles).
- Datasets where the spatial correlation or divergence of two factors is a primary question.
- Cross-sectional or aggregated data, not raw time series.
- Data where relative magnitudes (high/medium/low) are more important than exact values.