es.unex.sextante.lighting.viewshed
Class ApproximatedViewshedAlgorithm

java.lang.Object
  es.unex.sextante.core.GeoAlgorithm
      es.unex.sextante.lighting.viewshed.ApproximatedViewshedAlgorithm

public class ApproximatedViewshedAlgorithm
extends es.unex.sextante.core.GeoAlgorithm

Aproximated Viewshed algorithm. Computes visibility region of a watcher using similarity thresholds and interpolations to reduce the number of computed line-of-sights. Based on the paper "Approximating the visible region of a point on a terrain' by B. Ben-Moshe, P. Carmi, and M.J. Katz (http://cg.scs.carleton.ca/~paz/papers/radar5-1-04.pdf)

Field Summary

static java.lang.String	DEM
static java.lang.String	HEIGHT
static java.lang.String	HEIGHTOBS
static java.lang.String	POINT
static java.lang.String	RADIUS
static java.lang.String	RESULT
static java.lang.String	THRESHOLD
static java.lang.String	VISIBLE_FIELD

Fields inherited from class es.unex.sextante.core.GeoAlgorithm

m_AnalysisExtent, m_bIsAutoExtent, m_bIsDeterminatedProcess, m_bUserCanDefineAnalysisExtent, m_CRS, m_OutputFactory, m_OutputObjects, m_Parameters, m_Task

Constructor Summary

ApproximatedViewshedAlgorithm()

Method Summary

void	defineCharacteristics()
boolean	processAlgorithm()

Methods inherited from class es.unex.sextante.core.GeoAlgorithm

addOutput3DRasterLayer, addOutput3DRasterLayer, addOutputChart, addOutputChart, addOutputImage, addOutputNumericalValue, addOutputNumericalValue, addOutputObject, addOutputObject, addOutputRasterLayer, addOutputRasterLayer, addOutputRasterLayer, addOutputTable, addOutputTable, addOutputText, addOutputText, addOutputVectorLayer, addOutputVectorLayer, addOutputVectorLayer, addOutputVectorLayer, adjustOutputExtent, canDefineOutputExtentFromInput, execute, execute, generatesLayers, generatesLayersOrTables, getAlgorithmAsCommandLineSentences, getAnalysisExtent, getColorAlpha, getColorB, getColorG, getColorR, getCommandLineHelp, getCommandLineName, getCommandLineParametersHelp, getDescription, getGroup, getName, getNew3DRasterLayer, getNew3DRasterLayer, getNewInstance, getNewRasterLayer, getNewRasterLayer, getNewRasterLayer, getNewRasterLayer, getNewTable, getNewVectorLayer, getNewVectorLayer, getNumberOfBandsParameters, getNumberOfLineVectorLayers, getNumberOfNoDataParameters, getNumberOfOutputObjects, getNumberOfParameters, getNumberOfPointVectorLayers, getNumberOfPolygonLayers, getNumberOfRasterLayers, getNumberOfTableFieldsParameters, getNumberOfTables, getNumberOfVectorLayers, getOutputChannel, getOutputCRS, getOutputFilename, getOutputObjects, getParameters, getProcessMetadata, getTempRasterLayer, getTempRasterLayer, getTempVectorLayer, getUserCanDefineAnalysisExtent, hasCorrectParameterValues, is3D, isActive, isAutoExtent, isDeterminatedProcess, isSuitableForModelling, meets3DRasterRequirements, meetsDataRequirements, meetsRasterRequirements, meetsTableRequirements, meetsVectorRequirements, preprocessForModeller, requires3DRasterLayers, requiresIndividualRasterLayers, requiresIndividualVectorLayers, requiresLineVectorLayers, requiresMultipleRasterBands, requiresMultipleRasterLayers, requiresMultipleTables, requiresMultipleVectorLayers, requiresNonDataObjects, requiresPoints, requiresPointVectorLayers, requiresPolygonVectorLayers, requiresRasterLayers, requiresTableFields, requiresTables, requiresVectorLayers, setAnalysisExtent, setColorAlpha, setColorB, setColorG, setColorR, setDescription, setGroup, setIsDeterminatedProcess, setName, setOutputObjects, setParameters, setProgress, setProgressText, setUserCanDefineAnalysisExtent, toString

Methods inherited from class java.lang.Object

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

Field Detail

DEM

public static final java.lang.String DEM

See Also:

Constant Field Values

HEIGHT

public static final java.lang.String HEIGHT

See Also:

Constant Field Values

HEIGHTOBS

public static final java.lang.String HEIGHTOBS

See Also:

Constant Field Values

POINT

public static final java.lang.String POINT

See Also:

Constant Field Values

RADIUS

public static final java.lang.String RADIUS

See Also:

Constant Field Values

RESULT

public static final java.lang.String RESULT

See Also:

Constant Field Values

THRESHOLD

public static final java.lang.String THRESHOLD

See Also:

Constant Field Values

VISIBLE_FIELD

public static final java.lang.String VISIBLE_FIELD

See Also:

Constant Field Values

Constructor Detail

ApproximatedViewshedAlgorithm

public ApproximatedViewshedAlgorithm()

Method Detail

defineCharacteristics

public void defineCharacteristics()

Specified by:

defineCharacteristics in class es.unex.sextante.core.GeoAlgorithm

processAlgorithm

public boolean processAlgorithm()
                         throws es.unex.sextante.exceptions.GeoAlgorithmExecutionException

Specified by:

processAlgorithm in class es.unex.sextante.core.GeoAlgorithm

Throws:

es.unex.sextante.exceptions.GeoAlgorithmExecutionException