Examples of JGrassRegion

org.geotools.gce.grassraster.JGrassRegion
Represents the geographic region used in the jGrass engines.
JGrass calculations always work against a particular geographic region, which contains the boundaries of the region as well as the information of the region's resolution and the number of rows and cols of the region.

Warning: since the rows and cols have to be integers, the resolution is may be recalculated to fulfill this constraint. Users should not wonder if the asked resolution is not available in the supplied boundaries.
@author Andrea Antonello - www.hydrologis.com @since 3.0 @see {@link JGrassMapEnvironment} @source $URL$

Examples of org.geotools.gce.grassraster.JGrassRegion

             */
            double minY = srcRegion.getMinY();
            double newNorth = nativeRasterRegion.getNorth() - minY * yRes;
            double newSouth = newNorth - srcRegion.height * yRes;


            activeReadRegion = new JGrassRegion(newWest, newEast, newSouth, newNorth,
                    intRealRowsToRead, intRealColsToRead);
            int colsAtMaxRes = activeReadRegion.getCols();
            int rowsAtMaxRes = activeReadRegion.getRows();


            if (!useSubSamplingAsRequestedRowcols) {
                rasterMapWidth = colsAtMaxRes / sourceXSubsampling;
                rasterMapHeight = rowsAtMaxRes / sourceYSubsampling;
            } else {
                rasterMapWidth = sourceXSubsampling;
                rasterMapHeight = sourceYSubsampling;
            }
            activeReadRegion.setCols(rasterMapWidth);
            activeReadRegion.setRows(rasterMapHeight);


        } else {
            // the whole image is read
            activeReadRegion = new JGrassRegion(nativeRasterRegion);
            rasterMapWidth = nativeRasterRegion.getCols();
            rasterMapHeight = nativeRasterRegion.getRows();
        }


        /*

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Examples of org.geotools.gce.grassraster.JGrassRegion

            /*
             * Setup file window object that holds the geographic limits of the
             * file data.
             */
            if (readerFileHeaderMap.containsKey("n-s res")) {
                nativeRasterRegion = new JGrassRegion(Double.parseDouble(readerFileHeaderMap
                        .get("west")), Double.parseDouble(readerFileHeaderMap.get("east")), Double
                        .parseDouble(readerFileHeaderMap.get("south")), Double
                        .parseDouble(readerFileHeaderMap.get("north")), Double
                        .parseDouble(readerFileHeaderMap.get("e-w res")), Double
                        .parseDouble(readerFileHeaderMap.get("n-s res")));
            } else if (readerFileHeaderMap.containsKey("cols")) {
                nativeRasterRegion = new JGrassRegion(Double.parseDouble(readerFileHeaderMap
                        .get("west")), Double.parseDouble(readerFileHeaderMap.get("east")), Double
                        .parseDouble(readerFileHeaderMap.get("south")), Double
                        .parseDouble(readerFileHeaderMap.get("north")), Integer
                        .parseInt(readerFileHeaderMap.get("rows")), Integer
                        .parseInt(readerFileHeaderMap.get("cols")));

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Examples of org.geotools.gce.grassraster.JGrassRegion

        imageNullFileOS = ImageIO.createImageOutputStream(writerGrassEnv.getCELLMISC_NULL());


        double east = west + ((double) columns) * xRes;
        double north = south + ((double) rows) * yRes;


        JGrassRegion dataWindow = new JGrassRegion(west, east, south, north, rows, columns);


        createEmptyHeader(rows);


        if (hasListeners && abortRequired) {
            return;

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Examples of org.geotools.gce.grassraster.JGrassRegion

     * @throws IOException
     */
    public JGrassRegion getWriteRegion() throws IOException {
        if (writeRegion == null) {
            File wind = writerGrassEnv.getWIND();
            writeRegion = new JGrassRegion(wind.getAbsolutePath());
        }
        return writeRegion;
    }

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Examples of org.geotools.gce.grassraster.JGrassRegion

        /*
         * need to reread the wind file to get the proj and zone (GRASS will not work if the cellhd
         * is not equal to the WIND proj)
         */


        JGrassRegion tmp = getWriteRegion();
        createCellhd(tmp.getProj(), tmp.getZone(), dataRegion.getNorth(), dataRegion.getSouth(),
                dataRegion.getEast(), dataRegion.getWest(), dataRegion.getCols(), dataRegion
                        .getRows(), dataRegion.getNSResolution(), dataRegion.getWEResolution(), -1,
                1);


        // hist/<name>

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Examples of org.geotools.gce.grassraster.JGrassRegion

    private static final double EPSI = 0.0001;


    public void testJGrassMapEnvironment() throws IOException {
        URL theUrl = this.getClass().getClassLoader().getResource("exampleWIND1");
        File regionFile = DataUtilities.urlToFile(theUrl);
        JGrassRegion tmpRegion = new JGrassRegion(regionFile.getAbsolutePath());
        assertEquals(tmpRegion.getNorth(), 5052484.11852058);
        assertEquals(tmpRegion.getSouth(), 5041259.917339253);
        assertEquals(tmpRegion.getEast(), 679785.979783096);
        assertEquals(tmpRegion.getWest(), 668296.4273310362);
        assertEquals(tmpRegion.getNSResolution(), 4.999644178764807);
        assertEquals(tmpRegion.getWEResolution(), 4.999805244586515);
        assertEquals(tmpRegion.getRows(), 2245);
        assertEquals(tmpRegion.getCols(), 2298);


        theUrl = this.getClass().getClassLoader().getResource("exampleWINDLatLong");
        regionFile = DataUtilities.urlToFile(theUrl);
        tmpRegion = new JGrassRegion(regionFile.getAbsolutePath());
        assertEquals(tmpRegion.getNorth(), -3.742082752222222);
        assertEquals(tmpRegion.getSouth(), -3.9554160855555556);
        assertEquals(tmpRegion.getEast(), 30.15125023476092);
        assertEquals(tmpRegion.getWest(), 29.840416916475846);
        assertEquals(tmpRegion.getNSResolution(), 8.333333333333335E-4);
        assertEquals(tmpRegion.getWEResolution(), 8.333332929894733E-4);
        assertEquals(tmpRegion.getRows(), 256);
        assertEquals(tmpRegion.getCols(), 373);


        theUrl = this.getClass().getClassLoader().getResource("exampleCELLHD1");
        File cellhdFile = DataUtilities.urlToFile(theUrl);
        tmpRegion = new JGrassRegion(cellhdFile.getAbsolutePath());
        assertEquals(tmpRegion.getNorth(), 5052484.11852058);
        assertEquals(tmpRegion.getSouth(), 5041259.917339253);
        assertEquals(tmpRegion.getEast(), 679785.979783096);
        assertEquals(tmpRegion.getWest(), 668296.4273310362);
        assertEquals(tmpRegion.getNSResolution(), 4.999644178764807);
        assertEquals(tmpRegion.getWEResolution(), 4.999805244586515);
        assertEquals(tmpRegion.getRows(), 2245);
        assertEquals(tmpRegion.getCols(), 2298);


        theUrl = this.getClass().getClassLoader().getResource("exampleCELLHDLatLong");
        cellhdFile = DataUtilities.urlToFile(theUrl);
        tmpRegion = new JGrassRegion(cellhdFile.getAbsolutePath());
        assertTrue(tmpRegion.getNorth() - 0.0004 < EPSI);
        assertTrue(tmpRegion.getSouth() - (-5.0004) < EPSI);
        assertTrue(tmpRegion.getEast() - 35.0004 < EPSI);
        assertTrue(tmpRegion.getWest() - 25 < EPSI);
        assertTrue(tmpRegion.getNSResolution() - 8.333333333333334E-4 < EPSI);
        assertTrue(tmpRegion.getWEResolution() - 8.333332929894731E-4 < EPSI);
        assertEquals(tmpRegion.getRows(), 6001);
        assertEquals(tmpRegion.getCols(), 12001);


    }

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Examples of org.geotools.gce.grassraster.JGrassRegion

     * 
     * @param rasterReader the {@linkplain GrassBinaryRasterReadHandler} used to initialize fields.
     */
    private void inizializeFromRaster( GrassBinaryRasterReadHandler rasterReader ) {
        if (rasterReader != null) {
            JGrassRegion nativeRasterRegion = rasterReader.getNativeRasterRegion();
            nRows = nativeRasterRegion.getRows();
            nCols = nativeRasterRegion.getCols();
            xRes = nativeRasterRegion.getWEResolution();
            yRes = nativeRasterRegion.getNSResolution();
            north = nativeRasterRegion.getNorth();
            south = nativeRasterRegion.getSouth();
            east = nativeRasterRegion.getEast();
            west = nativeRasterRegion.getWest();
            noData = rasterReader.getNoData();
            try {
                colorRulesString = rasterReader.getColorRules(null);
                categoriesString = rasterReader.getCategories();
                crs = rasterReader.getCrs();

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