Examples of org.opengis.referencing.operation.CoordinateOperationFactory.createOperation()

Package org.opengis.referencing.operation

Class org.opengis.referencing.operation.CoordinateOperationFactory

Examples of org.opengis.referencing.operation.CoordinateOperationFactory.createOperation()

org.opengis.referencing.operation.CoordinateOperationFactory.createOperation()
Returns an operation for conversion or transformation between two coordinate reference systems.
- If an operation exists, it is returned.
- If more than one operation exists, the default is returned.
- If no operation exists, then the exception is thrown.
Implementations may try to {@linkplain CoordinateOperationAuthorityFactory#createFromCoordinateReferenceSystemCodes query an authority factory} first, and compute the operation next if no operation from{@code source} to {@code target} code was explicitly defined by the authority. @param sourceCRS Input coordinate reference system. @param targetCRS Output coordinate reference system. @return A coordinate operation from {@code sourceCRS} to {@code targetCRS}. @throws OperationNotFoundException if no operation path was found from {@code sourceCRS}to {@code targetCRS}. @throws FactoryException if the operation creation failed for some other reason.

        if (METADATA_ERASED) {
            assertTrue(crs1.getIdentifiers().isEmpty());
        } else {
            assertEquals(crs0.getIdentifiers(), crs1.getIdentifiers());
        }
        mt = opFactory.createOperation(crs0, crs1).getMathTransform();
        assertFalse(mt.isIdentity());
        assertTrue(mt instanceof LinearTransform);
        matrix = ((LinearTransform) mt).getMatrix();
        assertEquals(new GeneralMatrix(new double[][] {
            {0, 1, 0},

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        if (METADATA_ERASED) {
            assertTrue(crs1.getIdentifiers().isEmpty());
        } else {
            assertEquals(crs0.getIdentifiers(), crs1.getIdentifiers());
        }
        mt = opFactory.createOperation(crs0, crs1).getMathTransform();
        assertFalse(mt.isIdentity());
        assertTrue(mt instanceof LinearTransform);
        matrix = ((LinearTransform) mt).getMatrix();
        assertEquals(new GeneralMatrix(new double[][] {
            {0, 1, 0, 0},

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        if (METADATA_ERASED) {
            assertTrue(crs1.getIdentifiers().isEmpty());
        } else {
            assertEquals(crs0.getIdentifiers(), crs1.getIdentifiers());
        }
        mt = opFactory.createOperation(crs0, crs1).getMathTransform();
        assertTrue(mt.isIdentity());
        /*
         * Tests a projected CRS with (WEST, SOUTH) axis orientation.
         * The factory should arrange the axis with no more operation than a direction change.
         * While the end result is a matrix like the GeographicCRS case, the path that lead to

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        if (METADATA_ERASED) {
            assertTrue(crs1.getIdentifiers().isEmpty());
        } else {
            assertEquals(crs0.getIdentifiers(), crs1.getIdentifiers());
        }
        mt = opFactory.createOperation(crs0, crs1).getMathTransform();
        assertFalse(mt.isIdentity());
        assertTrue(mt instanceof LinearTransform);
        matrix = ((LinearTransform) mt).getMatrix();
        assertEquals(new GeneralMatrix(new double[][] {
            {-1,  0,  0},

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        crsFactory = ReferencingFactoryFinder.getCRSAuthorityFactory("EPSG", null);
        opFactory  = ReferencingFactoryFinder.getCoordinateOperationFactory(null);
        sourceCRS  = crsFactory.createCoordinateReferenceSystem("4230");
        targetCRS  = crsFactory.createCoordinateReferenceSystem("4326");
        operation  = opFactory.createOperation(sourceCRS, targetCRS);


        assertSame(sourceCRS, operation.getSourceCRS());
        assertSame(targetCRS, operation.getTargetCRS());
        assertSame(operation, opFactory.createOperation(sourceCRS, targetCRS));
        assertTrue("Expected a buffered factory but got " + opFactory.getClass().getName(),

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        targetCRS  = crsFactory.createCoordinateReferenceSystem("4326");
        operation  = opFactory.createOperation(sourceCRS, targetCRS);


        assertSame(sourceCRS, operation.getSourceCRS());
        assertSame(targetCRS, operation.getTargetCRS());
        assertSame(operation, opFactory.createOperation(sourceCRS, targetCRS));
        assertTrue("Expected a buffered factory but got " + opFactory.getClass().getName(),
                opFactory instanceof BufferedCoordinateOperationFactory);
        assertTrue("EPSG authority factory not found.",
                ((BufferedCoordinateOperationFactory) opFactory).getImplementationHints().
                get(Hints.COORDINATE_OPERATION_FACTORY) instanceof AuthorityBackedFactory);

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         * Tests a transformation not backed directly by an authority factory.
         * However, the inverse transform may exist in the authority factory.
         */
        sourceCRS  = crsFactory.createCoordinateReferenceSystem("4326");
        targetCRS  = crsFactory.createCoordinateReferenceSystem("2995");
        operation  = opFactory.createOperation(sourceCRS, targetCRS);
        assertTrue("This test needs an operation not backed by the EPSG factory.",
                   operation.getIdentifiers().isEmpty());
        // Should contains exactly one transformations and an arbitrary number of conversions.
        assertTrue(operation instanceof ConcatenatedOperation);
        int count = 0;

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        assertEquals(2, sourceCRS.getCoordinateSystem().getDimension());


        // Operations
        sourceCRS = factory.createCoordinateReferenceSystem("4273");
        targetCRS = factory.createCoordinateReferenceSystem("4979");
        operation = opf.createOperation(sourceCRS, targetCRS);
        assertNotSame(sourceCRS, targetCRS);
        assertFalse(operation.getMathTransform().isIdentity());


        assertSame(sourceCRS, factory.createCoordinateReferenceSystem("EPSG:4273"));
        assertSame(targetCRS, factory.createCoordinateReferenceSystem("EPSG:4979"));

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        assertSame(targetCRS, factory.createCoordinateReferenceSystem(" EPSG : 4979 "));


        // CRS with "South along 180 deg" and "South along 90 deg East" axis
        sourceCRS = factory.createCoordinateReferenceSystem("EPSG:32661");
        targetCRS = factory.createCoordinateReferenceSystem("4326");
        operation = opf.createOperation(sourceCRS, targetCRS);
        final MathTransform    transform = operation.getMathTransform();
        final CoordinateSystem  sourceCS = sourceCRS.getCoordinateSystem();
        final CoordinateSystemAxis axis0 = sourceCS.getAxis(0);
        final CoordinateSystemAxis axis1 = sourceCS.getAxis(1);
        assertEquals("Northing",                axis0.getName().getCode());

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    @Test
    public void testSerialization() throws FactoryException, IOException, ClassNotFoundException {
        CoordinateReferenceSystem crs1 = factory.createCoordinateReferenceSystem("4326");
        CoordinateReferenceSystem crs2 = factory.createCoordinateReferenceSystem("4322");
        CoordinateOperationFactory opf = ReferencingFactoryFinder.getCoordinateOperationFactory(null);
        CoordinateOperation cop = opf.createOperation(crs1, crs2);
        serialize(cop);


        crs1 = crs2 = null;
        final String crs1_name  = "4326";
        final int crs2_ranges[] = {4326,  4326,

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