Package org.apache.sedona.viz.extension.visualizationEffect

Class HeatMap

java.lang.Object

org.apache.sedona.viz.core.VisualizationOperator

org.apache.sedona.viz.extension.visualizationEffect.HeatMap

All Implemented Interfaces:

Serializable

public class HeatMap
extends VisualizationOperator

The Class HeatMap.

See Also:

• Serialized Form

Field Summary

Fields inherited from class org.apache.sedona.viz.core.VisualizationOperator

blue, colorAlpha, colorizeOption, controlColorChannel, datasetBoundary, distributedRasterColorMatrix, distributedRasterCountMatrix, distributedRasterImage, distributedVectorColors, distributedVectorImage, distributedVectorObjects, green, hasBeenSpatialPartitioned, maxPixelCount, onlyDrawOutline, parallelPhotoFilter, parallelRenderImage, partitionIntervalX, partitionIntervalY, partitionX, partitionY, PhotoFilterConvolutionMatrix, photoFilterRadius, rasterImage, red, resolutionX, resolutionY, reverseSpatialCoordinate, useInverseRatioForControlColorChannel, vectorImage

Constructor Summary

Constructors

Constructor	Description
HeatMap(int resolutionX, int resolutionY, org.locationtech.jts.geom.Envelope datasetBoundary, boolean reverseSpatialCoordinate, int blurRadius)	Instantiates a new heat map.
HeatMap(int resolutionX, int resolutionY, org.locationtech.jts.geom.Envelope datasetBoundary, boolean reverseSpatialCoordinate, int blurRadius, int partitionX, int partitionY, boolean parallelPhotoFilter, boolean parallelRenderImage)	Instantiates a new heat map.

Method Summary

Modifier and Type	Method	Description
protected Integer	EncodeToRGB(int normalizedCount)	Encode to RGB.
boolean	Visualize(org.apache.spark.api.java.JavaSparkContext sparkContext, SpatialRDD spatialRDD)	Visualize.

Methods inherited from class org.apache.sedona.viz.core.VisualizationOperator

ApplyPhotoFilter, Colorize, CustomizeColor, EncodeToColor, InitPhotoFilterWeightMatrix, Rasterize, Rasterize, RenderImage, setMaxPixelCount

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

HeatMap

public HeatMap(int resolutionX,
 int resolutionY,
 org.locationtech.jts.geom.Envelope datasetBoundary,
 boolean reverseSpatialCoordinate,
 int blurRadius)

Instantiates a new heat map.

Parameters:

resolutionX - the resolution X

resolutionY - the resolution Y

datasetBoundary - the dataset boundary

reverseSpatialCoordinate - the reverse spatial coordinate

blurRadius - the blur radius

HeatMap

public HeatMap(int resolutionX,
 int resolutionY,
 org.locationtech.jts.geom.Envelope datasetBoundary,
 boolean reverseSpatialCoordinate,
 int blurRadius,
 int partitionX,
 int partitionY,
 boolean parallelPhotoFilter,
 boolean parallelRenderImage)

Instantiates a new heat map.

Parameters:

resolutionX - the resolution X

resolutionY - the resolution Y

datasetBoundary - the dataset boundary

reverseSpatialCoordinate - the reverse spatial coordinate

blurRadius - the blur radius

partitionX - the partition X

partitionY - the partition Y

parallelPhotoFilter - the parallel photo filter

parallelRenderImage - the parallel render image

Method Details

EncodeToRGB

protected Integer EncodeToRGB(int normalizedCount)
                       throws Exception

Description copied from class: VisualizationOperator

Encode to RGB.

Overrides:

EncodeToRGB in class VisualizationOperator

Parameters:

normalizedCount - the normalized count

Returns:

the integer

Throws:

Exception - the exception

Visualize

public boolean Visualize(org.apache.spark.api.java.JavaSparkContext sparkContext,
 SpatialRDD spatialRDD)
                  throws Exception

Visualize.

Parameters:

sparkContext - the spark context

spatialRDD - the spatial RDD

Returns:

true, if successful

Throws:

Exception - the exception