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(12.54, 44.03), pixel);
        assertEquals(0, pixel[0]);
        assertEquals(0, pixel[1]);
        assertEquals(0, pixel[2]);
        // 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);
    }
}

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        // System.in.read();


        // check the footprints have been applied by pocking the output image
        byte[] pixel = new byte[3];
        // Mar Ionio, should be black
        coverage.evaluate(new DirectPosition2D(16.87, 40.19), pixel);
        assertEquals(0, pixel[0]);
        assertEquals(0, pixel[1]);
        assertEquals(0, pixel[2]);
        // Golfo di La Spezia, should be black
        coverage.evaluate(new DirectPosition2D(9.12, 44.25), pixel);

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        coverage.evaluate(new DirectPosition2D(16.87, 40.19), pixel);
        assertEquals(0, pixel[0]);
        assertEquals(0, pixel[1]);
        assertEquals(0, pixel[2]);
        // 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);
    }

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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);
    }


    private GridCoverage2D readCoverage() throws NoSuchAuthorityCodeException, FactoryException,
            IOException {

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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 gets black with FULL 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 gets black with FULL insets
        coverage.evaluate(new DirectPosition2D(11.52, 44.57), pixel);
        assertEquals(0, pixel[0]);
        assertEquals(0, pixel[1]);
        assertEquals(0, pixel[2]);
        // Golfo di La Spezia, should be black
        coverage.evaluate(new DirectPosition2D(9.12, 44.25), pixel);

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        coverage.evaluate(new DirectPosition2D(11.52, 44.57), pixel);
        assertEquals(0, pixel[0]);
        assertEquals(0, pixel[1]);
        assertEquals(0, pixel[2]);
        // 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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