---
title: "heatmap.MTHeatmapLayer | Mobile sdk | Mobile sdk android | Android"
description: "MTHeatmapLayer"
---

> For AI agents: a documentation index is available at [/llms.txt](https://docs.maptiler.com/llms.txt). Markdown versions of all pages are available by appending .md to any URL.

# heatmap.MTHeatmapLayer

@Serializable

class [MTHeatmapLayer](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/-m-t-heatmap-layer/) : [MTLayer](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer/-m-t-layer/)

A heatmap style layer renders a range of colors to represent the density of points in an area.

Supports color ramps and expressions for intensity, radius, opacity, and weight.

MembersMembers & Extensions

## Constructors

[MTHeatmapLayer](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/-m-t-heatmap-layer/-m-t-heatmap-layer/)

constructor(identifier: [String](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-string/index.html), sourceIdentifier: [String](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-string/index.html))

constructor(identifier: [String](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-string/index.html), sourceIdentifier: [String](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-string/index.html), maxZoom: [Double](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-double/index.html), minZoom: [Double](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-double/index.html), sourceLayer: [String](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-string/index.html))

constructor(identifier: [String](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-string/index.html), type: [MTLayerType](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer/-m-t-layer-type/), sourceIdentifier: [String](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-string/index.html), maxZoom: [Double](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-double/index.html)?, minZoom: [Double](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-double/index.html)?, sourceLayer: [String](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-string/index.html)?, color: [StyleValue](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.dsl/-style-value/)?, intensity: [StyleValue](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.dsl/-style-value/)?, opacity: [StyleValue](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.dsl/-style-value/)?, radius: [StyleValue](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.dsl/-style-value/)?, weight: [StyleValue](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.dsl/-style-value/)?, visibility: [MTLayerVisibility](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer/-m-t-layer-visibility/))

## Properties

[color](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/-m-t-heatmap-layer/color/)

var [color](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/-m-t-heatmap-layer/color/): [StyleValue](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.dsl/-style-value/)?

Defines the color of each pixel based on its density value in a heatmap. Should be an expression that uses "heatmap-density" as input.

[identifier](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/-m-t-heatmap-layer/identifier/)

@SerialName(value = "id")

open override var [identifier](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/-m-t-heatmap-layer/identifier/): [String](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-string/index.html)

Unique layer identifier.

[intensity](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/-m-t-heatmap-layer/intensity/)

var [intensity](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/-m-t-heatmap-layer/intensity/): [StyleValue](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.dsl/-style-value/)?

Similar to heatmap-weight but controls the intensity of the heatmap globally. Primarily used for adjusting the heatmap based on zoom level.

[maxZoom](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/-m-t-heatmap-layer/max-zoom/)

@SerialName(value = "maxzoom")

open override var [maxZoom](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/-m-t-heatmap-layer/max-zoom/): [Double](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-double/index.html)?

The maximum zoom level for the layer.

[minZoom](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/-m-t-heatmap-layer/min-zoom/)

@SerialName(value = "minzoom")

open override var [minZoom](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/-m-t-heatmap-layer/min-zoom/): [Double](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-double/index.html)?

The minimum zoom level for the layer.

[opacity](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/-m-t-heatmap-layer/opacity/)

var [opacity](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/-m-t-heatmap-layer/opacity/): [StyleValue](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.dsl/-style-value/)?

The global opacity at which the heatmap layer will be drawn.

[radius](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/-m-t-heatmap-layer/radius/)

var [radius](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/-m-t-heatmap-layer/radius/): [StyleValue](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.dsl/-style-value/)?

Radius of influence of one heatmap point in pixels. Increasing the value makes the heatmap smoother, but less detailed.

[sourceIdentifier](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/-m-t-heatmap-layer/source-identifier/)

@SerialName(value = "source")

open override var [sourceIdentifier](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/-m-t-heatmap-layer/source-identifier/): [String](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-string/index.html)

Identifier of the source to be used for this layer.

[sourceLayer](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/-m-t-heatmap-layer/source-layer/)

@SerialName(value = "source-layer")

open override var [sourceLayer](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/-m-t-heatmap-layer/source-layer/): [String](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-string/index.html)?

Vector tile source layer name, if applicable.

[type](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/-m-t-heatmap-layer/type/)

open override var [type](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/-m-t-heatmap-layer/type/): [MTLayerType](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer/-m-t-layer-type/)

Type of the layer.

[visibility](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/-m-t-heatmap-layer/visibility/)

var [visibility](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/-m-t-heatmap-layer/visibility/): [MTLayerVisibility](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer/-m-t-layer-visibility/)

Whether this layer is displayed.

[weight](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/-m-t-heatmap-layer/weight/)

var [weight](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/-m-t-heatmap-layer/weight/): [StyleValue](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.dsl/-style-value/)?

A measure of how much an individual point contributes to the heatmap.

## Functions

[colorConst](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/color-const/)

fun [MTHeatmapLayer](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/-m-t-heatmap-layer/).[colorConst](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/color-const/)(color: [Int](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-int/index.html)): [MTHeatmapLayer](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/-m-t-heatmap-layer/)

[colorExpr](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/color-expr/)

fun [MTHeatmapLayer](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/-m-t-heatmap-layer/).[colorExpr](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/color-expr/)(expr: [PropertyValue](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.dsl/-property-value/)): [MTHeatmapLayer](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/-m-t-heatmap-layer/)

[intensityConst](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/intensity-const/)

fun [MTHeatmapLayer](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/-m-t-heatmap-layer/).[intensityConst](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/intensity-const/)(value: [Double](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-double/index.html)): [MTHeatmapLayer](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/-m-t-heatmap-layer/)

[intensityExpr](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/intensity-expr/)

fun [MTHeatmapLayer](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/-m-t-heatmap-layer/).[intensityExpr](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/intensity-expr/)(expr: [PropertyValue](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.dsl/-property-value/)): [MTHeatmapLayer](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/-m-t-heatmap-layer/)

[opacityConst](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/opacity-const/)

fun [MTHeatmapLayer](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/-m-t-heatmap-layer/).[opacityConst](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/opacity-const/)(value: [Double](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-double/index.html)): [MTHeatmapLayer](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/-m-t-heatmap-layer/)

[opacityExpr](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/opacity-expr/)

fun [MTHeatmapLayer](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/-m-t-heatmap-layer/).[opacityExpr](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/opacity-expr/)(expr: [PropertyValue](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.dsl/-property-value/)): [MTHeatmapLayer](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/-m-t-heatmap-layer/)

[radiusConst](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/radius-const/)

fun [MTHeatmapLayer](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/-m-t-heatmap-layer/).[radiusConst](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/radius-const/)(value: [Double](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-double/index.html)): [MTHeatmapLayer](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/-m-t-heatmap-layer/)

[radiusExpr](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/radius-expr/)

fun [MTHeatmapLayer](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/-m-t-heatmap-layer/).[radiusExpr](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/radius-expr/)(expr: [PropertyValue](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.dsl/-property-value/)): [MTHeatmapLayer](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/-m-t-heatmap-layer/)

[weightConst](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/weight-const/)

fun [MTHeatmapLayer](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/-m-t-heatmap-layer/).[weightConst](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/weight-const/)(value: [Double](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-double/index.html)): [MTHeatmapLayer](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/-m-t-heatmap-layer/)

[weightExpr](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/weight-expr/)

fun [MTHeatmapLayer](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/-m-t-heatmap-layer/).[weightExpr](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/weight-expr/)(expr: [PropertyValue](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.dsl/-property-value/)): [MTHeatmapLayer](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/-m-t-heatmap-layer/)

[withFilter](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/-m-t-heatmap-layer/with-filter/)

fun [withFilter](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.heatmap/-m-t-heatmap-layer/with-filter/)(expr: [PropertyValue](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.dsl/-property-value/))