ExperimentalOptional Readonly ExperimentalcolorDensity → color ramp. Either explicit stops or a color list spread evenly across 0..1 (the first color should usually be transparent).
Optional Readonly ExperimentalintensityGlobal intensity multiplier.
Readonly ExperimentalkindOptional Readonly ExperimentalopacityLayer opacity (0..1).
Optional Readonly ExperimentalradiusKernel radius in pixels.
Optional Readonly ExperimentalweightNumeric property weighting each point (defaults to weight 1).
Serializable heatmap descriptor.