Package org.geotools.coverage.processing.operation

Class ZonalStatistics

Object

AbstractOperation

Operation2D

OperationJAI

BaseStatisticsOperationJAI

ZonalStatistics

All Implemented Interfaces:

Serializable, Operation

public class ZonalStatistics
extends BaseStatisticsOperationJAI

This operation is similar to the ZonalStats operation but implements a new version of the "ZonalStats" operation. The main difference between the two operations is that inside this version multiple geometries are handled, instead of the old version which supports only one geometry per time.

Author:

Nicola Lagomarsini, GeoSolutions SAS

See Also:

• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class OperationJAI

OperationJAI.Parameters

Field Summary

Fields

Modifier and Type	Field	Description
static final String	GT_SYNTHETIC_PROPERTY_ZONALSTATS	String key for getting the ZoneGeometry list.
static final Logger	LOGGER	Logger for this class.

Fields inherited from class BaseStatisticsOperationJAI

ROI, SPATIAL_SUBSAMPLING_X, SPATIAL_SUBSAMPLING_Y

Fields inherited from class OperationJAI

operation, RENDERED_MODE

Fields inherited from class Operation2D

PRIMARY_SOURCE_INDEX, SOURCE_0

Fields inherited from class AbstractOperation

descriptor

Constructor Summary

Constructors

Constructor	Description
ZonalStatistics()	Constructs a default "ZonalStatistics" operation.

Method Summary

Modifier and Type	Method	Description
protected Map<String,?>	getProperties(RenderedImage data, CoordinateReferenceSystem crs, InternationalString name, MathTransform toCRS, GridCoverage2D[] sources, OperationJAI.Parameters parameters)	Prepares the properties to be given to the coverage created by the deriveGridCoverage method.
protected ParameterBlockJAI	prepareParameters(ParameterValueGroup parameters)	Copies parameter values from the specified ParameterValueGroup to the ParameterBlockJAI

Methods inherited from class BaseStatisticsOperationJAI

convertPolygon

Methods inherited from class OperationJAI

createRenderedImage, deriveCategory, deriveGridCoverage, deriveName, deriveRange, deriveSampleDimension, deriveUnit, doOperation, equals, extractSources, getJAI, getOperationDescriptor, getQuantitative, handleJAIEXTParams, handleROINoDataInternal, handleROINoDataProperties, hashCode, resampleToCommonGeometry

Methods inherited from class Operation2D

extractSources, getFactory

Methods inherited from class AbstractOperation

getDescription, getDocURL, getName, getNumSources, getParameters, getVendor, getVersion, toString

Methods inherited from class Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Details

GT_SYNTHETIC_PROPERTY_ZONALSTATS

public static final String GT_SYNTHETIC_PROPERTY_ZONALSTATS

String key for getting the ZoneGeometry list.

See Also:

• Constant Field Values

LOGGER

public static final Logger LOGGER

Logger for this class.

Constructor Details

ZonalStatistics

public ZonalStatistics()
                throws OperationNotFoundException

Constructs a default "ZonalStatistics" operation.

Throws:

OperationNotFoundException

Method Details

prepareParameters

protected ParameterBlockJAI prepareParameters(ParameterValueGroup parameters)

Copies parameter values from the specified ParameterValueGroup to the ParameterBlockJAI

Overrides:

prepareParameters in class BaseStatisticsOperationJAI

Parameters:

parameters - The ParameterValueGroup to be copied.

Returns:

A copy of the provided ParameterValueGroup as a JAI block.

See Also:

• OperationJAI.prepareParameters(org.geotools.api.parameter.ParameterValueGroup)

getProperties

protected Map<String,?> getProperties(RenderedImage data,
 CoordinateReferenceSystem crs,
 InternationalString name,
 MathTransform toCRS,
 GridCoverage2D[] sources,
 OperationJAI.Parameters parameters)

Description copied from class: OperationJAI

Prepares the properties to be given to the coverage created by the deriveGridCoverage method. The default implementation returns null.

Overrides:

getProperties in class OperationJAI

Parameters:

data - The RenderedImage created by this operation.

crs - The coordinate reference system assigned to the coverage this OperationJAI will produce.

name - The name assigned to the coverage this OperationJAI will produce.

toCRS - The transform from grid to crs to be assigned to the coverage this OperationJAI will produce.

sources - The sources to be assigned to the coverage this OperationJAI will produce.

parameters - The parameters that were used by this OperationJAI.

Returns:

a Map with the properties generated by this OperationJAI or null if we haven't any.