Leaflet Bubble Map
A proportional-symbol map where every location is a circle whose area encodes a numeric value — population, sales, footfall, anything quantitative — placed on a real OpenStreetMap basemap. Distinct from the existing marker-cluster map (#41), which clusters points without showing
Template details
- map
- bubble
- proportional
- circle
- leaflet
- geospatial
When to use this template
This visualization excels at revealing spatial patterns and magnitudes of a single quantitative variable across distinct geographic locations. It allows analysts to quickly identify "hot spots" or "cold spots" and compare the scale of phenomena between specific places, answering questions of "where and how much?". It's ideal for understanding the distribution and intensity of discrete events or metrics over a map.
- Point-based geographic data with latitude and longitude coordinates.
- One key non-negative numeric measure per distinct location.
- Datasets where individual location identity and value magnitude are crucial.
- Low to medium number of distinct geographic points (hundreds to low thousands).
- Data where values can be meaningfully represented by circle area.
- Cross-sectional or time-series data aggregated to specific points.