Package org.opengis.coverage.grid

Examples of org.opengis.coverage.grid.GridCoverage

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     * @todo Investigate why the color palette is lost.
     */
    @Test
    public void testSubtract() {
        double[]      constants      = new double[] {18.75};
        GridCoverage  sourceCoverage = SST.view(GEOPHYSICS);
        GridCoverage  targetCoverage = (GridCoverage) processor.subtract(sourceCoverage, constants);
        RenderedImage sourceImage    = sourceCoverage.getRenderableImage(0,1).createDefaultRendering();
        RenderedImage targetImage    = targetCoverage.getRenderableImage(0,1).createDefaultRendering();
        Raster        sourceRaster   = sourceImage.getData();
        Raster        targetRaster   = targetImage.getData();
        assertNotSame(sourceCoverage,                                targetCoverage);
        assertNotSame(sourceImage,                                   targetImage);
        assertNotSame(sourceRaster,                                  targetRaster);
        assertSame   (sourceCoverage.getCoordinateReferenceSystem(), targetCoverage.getCoordinateReferenceSystem());
        assertEquals (sourceCoverage.getEnvelope(),                  targetCoverage.getEnvelope());
        assertEquals (sourceCoverage.getGridGeometry(),              targetCoverage.getGridGeometry());
        assertEquals (sourceRaster  .getMinX(),                      targetRaster  .getMinX());
        assertEquals (sourceRaster  .getMinY(),                      targetRaster  .getMinY());
        assertEquals (sourceRaster  .getWidth(),                     targetRaster  .getWidth());
        assertEquals (sourceRaster  .getHeight(),                    targetRaster  .getHeight());
        assertEquals (0, sourceRaster.getMinX());
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     *
     * @todo Investigate why the geophysics view is much more visible than the non-geophysics one.
     */
    @Test
    public void testGradientMagnitude() {
        GridCoverage  sourceCoverage = SST.view(GEOPHYSICS);
        GridCoverage  targetCoverage = (GridCoverage) processor.gradientMagnitude(sourceCoverage);
        RenderedImage sourceImage    = sourceCoverage.getRenderableImage(0,1).createDefaultRendering();
        RenderedImage targetImage    = targetCoverage.getRenderableImage(0,1).createDefaultRendering();
        Raster        sourceRaster   = sourceImage.getData();
        Raster        targetRaster   = targetImage.getData();
        assertNotSame(sourceCoverage,                                targetCoverage);
        assertNotSame(sourceImage,                                   targetImage);
        assertNotSame(sourceRaster,                                  targetRaster);
        assertSame   (sourceCoverage.getCoordinateReferenceSystem(), targetCoverage.getCoordinateReferenceSystem());
        assertEquals (sourceCoverage.getEnvelope(),                  targetCoverage.getEnvelope());
        assertEquals (sourceCoverage.getGridGeometry(),              targetCoverage.getGridGeometry());
        assertEquals (sourceRaster  .getMinX(),                      targetRaster  .getMinX());
        assertEquals (sourceRaster  .getMinY(),                      targetRaster  .getMinY());
        assertEquals (sourceRaster  .getWidth(),                     targetRaster  .getWidth());
        assertEquals (sourceRaster  .getHeight(),                    targetRaster  .getHeight());
        assertEquals (0, sourceRaster.getMinX());
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//                }
//            }
//        } else {
            final int imageIndex = ((SliceDescriptor) sd)
                    .getImageIndex();
            GridCoverage gc = Utilities.compute(DefaultFileDriver.urlToFile(access
                    .getInput()), imageIndex, needTransformation, emptyRequest,
                    useJAI, imageReadParam, false, sampleDimensions, HDF4Driver.spi, this.name.toString(), coverageFactory, access.raster2ModelMap.get(this.name),
                    access.spatialReferenceSystem2DMap.get(this.name), access.coverageEnvelope2DMap.get(this.name));
            if (gc != null)
                response.addResult(gc);
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         * color (or grayscale) is performed on the fly everytime the image is rendered.
         */
        CoordinateReferenceSystem crs = DefaultGeographicCRS.WGS84;
        Envelope envelope = new Envelope2D(crs, 0, 0, 30, 30);
        GridCoverageFactory factory = CoverageFactoryFinder.getGridCoverageFactory(null);
        GridCoverage gc = factory.create("My grayscale coverage", raster, envelope);
        if (SHOW) {
            ((GridCoverage2D) gc).show(); // Convenience method specific to Geotools.
        }
        /*
         * The above example created a grayscale image. The example below creates a new grid
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            }
        }
        CoordinateReferenceSystem crs = DefaultGeographicCRS.WGS84;
        Envelope envelope = new Envelope2D(crs, 0, 0, 30, 30);
        GridCoverageFactory factory = CoverageFactoryFinder.getGridCoverageFactory(null);
        GridCoverage gc = factory.create("My grayscale matrix", matrix, envelope);
        if (SHOW) {
            ((GridCoverage2D) gc).show(); // Convenience method specific to Geotools.
        }
    }
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        //
        // Reading the coverage
        //
        // /////////////////////////////////////////////////////////
       
        GridCoverage gc  = reader.read(CoverageUtils.getParameters(
                    reader.getFormat().getReadParameters(), info.getParameters()));
       
        if ((gc == null) || !(gc instanceof GridCoverage2D)) {
            throw new IOException("The requested coverage could not be found.");
        }
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        GetLegendGraphicRequest req = new GetLegendGraphicRequest();
        CoverageInfo cInfo = getCatalog().getCoverageByName("world");
        assertNotNull(cInfo);

        GridCoverage coverage = cInfo.getGridCoverage(null, null);
        SimpleFeatureCollection feature;
        feature = FeatureUtilities.wrapGridCoverage((GridCoverage2D) coverage);
        req.setLayer(feature.getSchema());
        req.setStyle(multipleRulesStyle);
        req.setLegendOptions(new HashMap());
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        assertTrue(tiffFile.exists());

        // read and check
        GeoTiffFormat format = new GeoTiffFormat();
        GridCoverage2D gc = format.getReader(tiffFile).read(null);
        GridCoverage original = getCatalog().getCoverageByName(getLayerId(MockData.TASMANIA_DEM))
                .getGridCoverage(null, null);
        //
        // check the envelope did not change
        assertEquals(original.getEnvelope().getMinimum(0), gc.getEnvelope().getMinimum(0), EPS);
        assertEquals(original.getEnvelope().getMinimum(1), gc.getEnvelope().getMinimum(1), EPS);
        assertEquals(original.getEnvelope().getMaximum(0), gc.getEnvelope().getMaximum(0), EPS);
        assertEquals(original.getEnvelope().getMaximum(1), gc.getEnvelope().getMaximum(1), EPS);
    }
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        MockHttpServletResponse response = postAsServletResponse(root(), xml);
        // System.out.println(response.getOutputStreamContent());
        InputStream is = getBinaryInputStream(response);
       
        ArcGridFormat format = new ArcGridFormat();
        GridCoverage gc = format.getReader(is).read(null);
       
        GridCoverage original = getCatalog().getCoverageByName(getLayerId(MockData.TASMANIA_DEM)).getGridCoverage(null, null);
       
        // check the envelope did not change
        assertEquals(original.getEnvelope().getMinimum(0), gc.getEnvelope().getMinimum(0), EPS);
        assertEquals(original.getEnvelope().getMinimum(1), gc.getEnvelope().getMinimum(1), EPS);
        assertEquals(original.getEnvelope().getMaximum(0), gc.getEnvelope().getMaximum(0), EPS);
        assertEquals(original.getEnvelope().getMaximum(1), gc.getEnvelope().getMaximum(1), EPS);
       
        // check this has been resized properly
        GridEnvelope originalRange = original.getGridGeometry().getGridRange();
        GridEnvelope resultRange = gc.getGridGeometry().getGridRange();
        assertEquals(originalRange.getSpan(0) * 2, resultRange.getSpan(0));
        assertEquals(originalRange.getSpan(1) * 2, resultRange.getSpan(1));

    }
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        MockHttpServletResponse response = postAsServletResponse(root(), xml);
        InputStream is = getBinaryInputStream(response);
       
        ArcGridFormat format = new ArcGridFormat();
        GridCoverage gc = format.getReader(is).read(null);
       
        assertTrue(new Envelope(-145.4, 145.6, -41.8, -42.1).contains(new ReferencedEnvelope(gc.getEnvelope())));
       
        double[] valueInside = (double[]) gc.evaluate(new DirectPosition2D(145.55, -42));
        assertEquals(615.0, valueInside[0]);
        double[] valueOutside = (double[]) gc.evaluate(new DirectPosition2D(145.57, -41.9));
        // this should really be NaN...
        assertEquals(0.0, valueOutside[0]);

    }
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