Examples of org.geotools.coverage.processing.OperationJAI

Package org.geotools.coverage.processing

Examples of org.geotools.coverage.processing.OperationJAI

org.geotools.coverage.processing.OperationJAI

sun.com/products/java-media/jai/">Java Advanced Imaging. This class help to leverage the rich set of JAI operators in an GeoAPI framework. {@code OperationJAI} inherits operation name and argument types from {@link OperationDescriptor}, except the source argument type (usually {@linkplain RenderedImage}.class) which is set to {@linkplain GridCoverage2D}.class. If there is only one source argument, it will be renamed {@code "source"} for better compliance with OpenGIS usage.

The entry point for applying an operation is the usual {@link #doOperation doOperation} method.The default implementation forward the call to other methods for different bits of tasks, resulting in the following chain of calls:

{@link #doOperation doOperation}: the entry point.

{@link #resampleToCommonGeometry resampleToCommonGeometry}: reprojects all sources to the same coordinate reference system.

{@link #deriveGridCoverage deriveGridCoverage}: gets the destination properties.

{@link #deriveSampleDimension deriveSampleDimension}: gets the destination sample dimensions.

{@link #deriveCategory deriveCategory}: gets the destination categories.

{@link #deriveRange deriveRange}: gets the expected range of values.

{@link #deriveUnit deriveUnit}: gets the destination units.

{@link #createRenderedImage createRenderedImage}: the actual call to {@link JAI#createNS JAI.createNS}.

@since 2.2 @source $URL$ @version $Id$ @author Martin Desruisseaux (IRD) @author Simone Giannecchini


            RasterSymbolizerHelper rsp = new RasterSymbolizerHelper(gc, null);
            rsp.visit(rs);
            GridCoverage2D recoloredGridCoverage = (GridCoverage2D) rsp.getOutput();


            final OperationJAI op = new OperationJAI("Histogram"); //$NON-NLS-1$
            ParameterValueGroup params = op.getParameters();
            params.parameter("Source").setValue(recoloredGridCoverage); //$NON-NLS-1$


            recoloredGridCoverage = (GridCoverage2D) op.doOperation(params, null);
            final Histogram h = (Histogram) recoloredGridCoverage.getProperty("histogram"); //$NON-NLS-1$


            Display.getDefault().asyncExec(new Runnable(){
                public void run() {
                    rgbViewer.updateHistograms(h.getBins());

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        return null;
      }
      
    }
      
    final OperationJAI op = new OperationJAI("ZonalStats"); //$NON-NLS-1$
    ParameterValueGroup params = op.getParameters();
    params.parameter("dataImage").setValue(gcRaw); //$NON-NLS-1$
    params.parameter("stats").setValue(stats); //$NON-NLS-1$
    params.parameter("bands").setValue(new Integer[] { 0 }); //$NON-NLS-1$
    if (ignore.size() > 0){
      params.parameter("ranges").setValue(ignore); //$NON-NLS-1$
      params.parameter("rangesType").setValue(Range.Type.EXCLUDE); //$NON-NLS-1$
      params.parameter("rangeLocalStats").setValue(false); //$NON-NLS-1$
    }
    


    final GridCoverage2D coverage = (GridCoverage2D) op.doOperation(params,null);
    final ZonalStats zstats = (ZonalStats) coverage
        .getProperty(ZonalStatsDescriptor.ZONAL_STATS_PROPERTY);
    double min = zstats.statistic(Statistic.MIN).results().get(0).getValue();
    double max = zstats.statistic(Statistic.MAX).results().get(0).getValue();
    return new double[]{min,max};

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                    }


                    final Statistic[] statistis = statisticsSet.toArray(new Statistic[statisticsSet
                            .size()]);


                    final OperationJAI op = new OperationJAI("ZonalStats");
                    ParameterValueGroup params = op.getParameters();
                    params.parameter("dataImage").setValue(cropped);
                    params.parameter("stats").setValue(statistis);
                    params.parameter("bands").setValue(bands);
                    params.parameter("roi").setValue(roi);
                    params.parameter("ranges").setValue(inclusionRanges);
                    params.parameter("rangesType").setValue(rangesType);
                    params.parameter("rangeLocalStats").setValue(isLocal);


                    final GridCoverage2D coverage = (GridCoverage2D) op.doOperation(params, null);
                    final ZonalStats stats = (ZonalStats) coverage
                            .getProperty(ZonalStatsDescriptor.ZONAL_STATS_PROPERTY);
                    final Map<Statistic, List<Result>> statsMap = new HashMap<Statistic, List<Result>>();
                    for (Statistic statistic : statistis) {
                        final List<Range> inclRanges = CollectionFactory.list();

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Related Classes of org.geotools.coverage.processing.OperationJAI

org.geotools.coverage.Category

org.geotools.coverage.grid.GridCoverage2D

org.geotools.coverage.grid.GridGeometry2D

org.geotools.coverage.grid.ViewType

org.geotools.coverage.GridSampleDimension

org.geotools.coverage.processing.ZonalStasTest$StatisticsTool

org.geotools.parameter.ImagingParameterDescriptors

org.geotools.parameter.ImagingParameters

org.geotools.referencing.operation.transform.DimensionFilter

org.geotools.util.NumberRange

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{@link #doOperation doOperation}:	the entry point.
{@link #resampleToCommonGeometry resampleToCommonGeometry}:	reprojects all sources to the same coordinate reference system.
{@link #deriveGridCoverage deriveGridCoverage}:	gets the destination properties.
{@link #deriveSampleDimension deriveSampleDimension}:	gets the destination sample dimensions.
{@link #deriveCategory deriveCategory}:	gets the destination categories.
{@link #deriveRange deriveRange}:	gets the expected range of values.
{@link #deriveUnit deriveUnit}:	gets the destination units.
{@link #createRenderedImage createRenderedImage}:	the actual call to {@link JAI#createNS JAI.createNS}.