Function: sampleHeatmap()

function sampleHeatmap(data, x, y, transform?): number;

Experimental

The value the shader colors at data point (x, y) (linear data coordinates), or NaN where the fragment is transparent: outside the edges, on a non-finite cell, in a gap, or for invalid data. transform only matters for gaps (px per data unit); default identity.

Parameters

Parameter	Type	Default value
data	HeatmapSampleInput	undefined
x	number	undefined
y	number	undefined
transform	DataTransform	IDENTITY_TRANSFORM

Returns

number