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

Class ChoroplethMap

java.lang.Object

org.apache.sedona.viz.core.VisualizationOperator

org.apache.sedona.viz.extension.visualizationEffect.ChoroplethMap

All Implemented Interfaces:

Serializable

public class ChoroplethMap
extends VisualizationOperator

The Class ChoroplethMap.

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
ChoroplethMap(int resolutionX, int resolutionY, org.locationtech.jts.geom.Envelope datasetBoundary, boolean reverseSpatialCoordinate)	Instantiates a new choropleth map.
ChoroplethMap(int resolutionX, int resolutionY, org.locationtech.jts.geom.Envelope datasetBoundary, boolean reverseSpatialCoordinate, boolean generateVectorImage)	Instantiates a new choropleth map.
ChoroplethMap(int resolutionX, int resolutionY, org.locationtech.jts.geom.Envelope datasetBoundary, boolean reverseSpatialCoordinate, int partitionX, int partitionY, boolean parallelRenderImage)	Instantiates a new choropleth map.
ChoroplethMap(int resolutionX, int resolutionY, org.locationtech.jts.geom.Envelope datasetBoundary, boolean reverseSpatialCoordinate, int partitionX, int partitionY, boolean parallelRenderImage, boolean generateVectorImage)	Instantiates a new choropleth map.

Method Summary

Modifier and Type	Method	Description
protected Color	EncodeToColor(int normalizedCount)	Encode to color.
boolean	Visualize(org.apache.spark.api.java.JavaSparkContext sparkContext, org.apache.spark.api.java.JavaPairRDD<org.locationtech.jts.geom.Polygon,Long> spatialPairRDD)	Visualize.

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

ApplyPhotoFilter, Colorize, CustomizeColor, EncodeToRGB, 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

ChoroplethMap

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

Instantiates a new choropleth map.

Parameters:

resolutionX - the resolution X

resolutionY - the resolution Y

datasetBoundary - the dataset boundary

reverseSpatialCoordinate - the reverse spatial coordinate

ChoroplethMap

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

Instantiates a new choropleth map.

Parameters:

resolutionX - the resolution X

resolutionY - the resolution Y

datasetBoundary - the dataset boundary

reverseSpatialCoordinate - the reverse spatial coordinate

generateVectorImage - the generate vector image

ChoroplethMap

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

Instantiates a new choropleth map.

Parameters:

resolutionX - the resolution X

resolutionY - the resolution Y

datasetBoundary - the dataset boundary

reverseSpatialCoordinate - the reverse spatial coordinate

partitionX - the partition X

partitionY - the partition Y

parallelRenderImage - the parallel render image

ChoroplethMap

public ChoroplethMap(int resolutionX,
 int resolutionY,
 org.locationtech.jts.geom.Envelope datasetBoundary,
 boolean reverseSpatialCoordinate,
 int partitionX,
 int partitionY,
 boolean parallelRenderImage,
 boolean generateVectorImage)

Instantiates a new choropleth map.

Parameters:

resolutionX - the resolution X

resolutionY - the resolution Y

datasetBoundary - the dataset boundary

reverseSpatialCoordinate - the reverse spatial coordinate

partitionX - the partition X

partitionY - the partition Y

parallelRenderImage - the parallel render image

generateVectorImage - the generate vector image

Method Details

EncodeToColor

protected Color EncodeToColor(int normalizedCount)
                       throws Exception

Description copied from class: VisualizationOperator

Encode to color.

Overrides:

EncodeToColor in class VisualizationOperator

Parameters:

normalizedCount - the normalized count

Returns:

the color

Throws:

Exception - the exception

Visualize

public boolean Visualize(org.apache.spark.api.java.JavaSparkContext sparkContext,
 org.apache.spark.api.java.JavaPairRDD<org.locationtech.jts.geom.Polygon,Long> spatialPairRDD)
                  throws Exception

Visualize.

Parameters:

sparkContext - the spark context

spatialPairRDD - the spatial pair RDD

Returns:

true, if successful

Throws:

Exception - the exception