Heatmap Renderer
The HeatmapRenderer renders point data into a raster visualization that emphasizes areas of higher density or weighted values.
Properties
| Property | Details |
|---|---|
| blurRadius | The radius (in pixels) of the circle over which the majority of each point's value is spread. |
| colorStops | An array of colorStop objects describing the renderer's color ramp with more specificity than just colors. |
| field | This is optional as this renderer can be created if no field is specified. Each feature gets the same value/importance/weight or with a field where each feature is weighted by the field's value. |
| maxPixelIntensity | The pixel intensity value which is assigned the final color in the color ramp. |
| minPixelIntensity | The pixel intensity value which is assigned the initial color in the color ramp. |
| type | Specifies the type of renderer used. Value of this property must be heatmap |
Example
Live sample web map showing heatmap renderer.
{
"renderer": {
"type": "heatmap",
"blurRadius": 10,
"colorStops": [
{
"ratio": 0,
"color": [
133,
193,
200,
0
]
},
{
"ratio": 0.01,
"color": [
133,
193,
200,
0
]
}
],
"maxPixelIntensity": 1249.2897582229123,
"minPixelIntensity": 0
}
}
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