Bubble Map¶

A choropleth with proportionally-sized circles at region centroids.

When to Use¶

Showing both a color metric and a size metric on a map
When absolute values matter more than density (population, production volume)

Example¶

from d3_bridge import BubbleMap

chart = BubbleMap(
    geodata=Region.objects.all(),
    value_field="average_income",
    size_field="population",
    size_range=[3, 30],
    title="Income & Population by Region",
)

Parameters¶

Inherits all ChoroplethMap parameters, plus:

Parameter	Type	Default	Description
`size_field`	str	`None`	Property to scale bubble radius by
`size_range`	list	`[3, 30]`	Min and max bubble radius in pixels