Examples of org.geotools.coverage.grid.GridCoverage2D.evaluate()

Class org.geotools.coverage.grid.GridCoverage2D

Examples of org.geotools.coverage.grid.GridCoverage2D.evaluate()

org.geotools.coverage.grid.GridCoverage2D.evaluate()
Returns the value vector for a given location (world coordinates). A value for each sample dimension is included in the vector.

        coverage.evaluate(new DirectPosition2D(9.12, 44.25), pixel);
        assertEquals(0, pixel[0]);
        assertEquals(0, pixel[1]);
        assertEquals(0, pixel[2]);
        // Sardinia, not black
        coverage.evaluate(new DirectPosition2D(9, 40), pixel);
        assertTrue(pixel[0] + pixel[1] + pixel[2] > 0);
        // Piedmont, not black
        coverage.evaluate(new DirectPosition2D(8, 45), pixel);
        assertTrue(pixel[0] + pixel[1] + pixel[2] > 0);
        disposeCoverage(coverage);

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        assertEquals(0, pixel[2]);
        // Sardinia, not black
        coverage.evaluate(new DirectPosition2D(9, 40), pixel);
        assertTrue(pixel[0] + pixel[1] + pixel[2] > 0);
        // Piedmont, not black
        coverage.evaluate(new DirectPosition2D(8, 45), pixel);
        assertTrue(pixel[0] + pixel[1] + pixel[2] > 0);
        disposeCoverage(coverage);
        
        final ImageMosaicReader reader = TestUtils.getReader(testMosaicUrl, new ImageMosaicFormat());
        // activate footprint management

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        assertNotNull(coverage);
     
        // check the footprints have been applied by pocking the output image
        pixel = new byte[4];
        // Close to San Marino, black if we have the insets
        coverage.evaluate(tr.transform(new DirectPosition2D(coverage.getRenderedImage().getMinX(),coverage.getRenderedImage().getMinY()),null), pixel);
//        RenderedImageBrowser.showChain(coverage.getRenderedImage());
        assertEquals(0, pixel[0]);
        assertEquals(0, pixel[1]);
        assertEquals(0, pixel[2]);
        assertEquals(0, pixel[3]);

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//         System.in.read();
        
//        // check the footprints have been applied by pocking the output image
        byte[] pixel = new byte[3];
        // Close to San Marino, black if we have the insets
        coverage.evaluate(new DirectPosition2D(12.54, 44.03), pixel);
        assertEquals(0, pixel[0]);
        assertEquals(0, pixel[1]);
        assertEquals(0, pixel[2]);
        // Inner BORDER should not get black with border insets
        coverage.evaluate(new DirectPosition2D(11.52, 44.57), pixel);

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        coverage.evaluate(new DirectPosition2D(12.54, 44.03), pixel);
        assertEquals(0, pixel[0]);
        assertEquals(0, pixel[1]);
        assertEquals(0, pixel[2]);
        // Inner BORDER should not get black with border insets
        coverage.evaluate(new DirectPosition2D(11.52, 44.57), pixel);
        assertTrue(pixel[0] + pixel[1] + pixel[2] > 0);
        // Golfo di La Spezia, should be black
        coverage.evaluate(new DirectPosition2D(9.12, 44.25), pixel);
        assertEquals(0, pixel[0]);
        assertEquals(0, pixel[1]);

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        assertEquals(0, pixel[2]);
        // Inner BORDER should not get black with border insets
        coverage.evaluate(new DirectPosition2D(11.52, 44.57), pixel);
        assertTrue(pixel[0] + pixel[1] + pixel[2] > 0);
        // Golfo di La Spezia, should be black
        coverage.evaluate(new DirectPosition2D(9.12, 44.25), pixel);
        assertEquals(0, pixel[0]);
        assertEquals(0, pixel[1]);
        assertEquals(0, pixel[2]);
        // Sardinia, not black
        coverage.evaluate(new DirectPosition2D(9, 40), pixel);

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        coverage.evaluate(new DirectPosition2D(9.12, 44.25), pixel);
        assertEquals(0, pixel[0]);
        assertEquals(0, pixel[1]);
        assertEquals(0, pixel[2]);
        // Sardinia, not black
        coverage.evaluate(new DirectPosition2D(9, 40), pixel);
        assertTrue(pixel[0] + pixel[1] + pixel[2] > 0);
        // Piedmont, not black
        coverage.evaluate(new DirectPosition2D(8, 45), pixel);
        assertTrue(pixel[0] + pixel[1] + pixel[2] > 0);
        disposeCoverage(coverage);

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        assertEquals(0, pixel[2]);
        // Sardinia, not black
        coverage.evaluate(new DirectPosition2D(9, 40), pixel);
        assertTrue(pixel[0] + pixel[1] + pixel[2] > 0);
        // Piedmont, not black
        coverage.evaluate(new DirectPosition2D(8, 45), pixel);
        assertTrue(pixel[0] + pixel[1] + pixel[2] > 0);
        disposeCoverage(coverage);
        
        final ImageMosaicReader reader = TestUtils.getReader(testMosaicUrl, new ImageMosaicFormat());
        // activate footprint management

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        assertNotNull(coverage);
     
        // check the footprints have been applied by pocking the output image
        pixel = new byte[4];
        // Close to San Marino, black if we have the insets
        coverage.evaluate(tr.transform(new DirectPosition2D(coverage.getRenderedImage().getMinX(),coverage.getRenderedImage().getMinY()),null), pixel);
//        RenderedImageBrowser.showChain(coverage.getRenderedImage());
        assertEquals(0, pixel[0]);
        assertEquals(0, pixel[1]);
        assertEquals(0, pixel[2]);
        assertEquals(0, pixel[3]);

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        // make sure it has not been cropped
        int[] value = new int[3];
        
        // some point in USA
        coverage.evaluate((DirectPosition) new DirectPosition2D(wgs84Flipped, 40, -90), value);
        assertTrue(value[0] > 0);
        assertTrue(value[1] > 0);
        assertTrue(value[2] > 0);
        
        // some point in Europe

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