Examples of org.geotools.gce.geotiff.GeoTiffReader

org.geotools.gce.geotiff.GeoTiffReader
this class is responsible for exposing the data and the Georeferencing metadata available to the Geotools library. This reader is heavily based on the capabilities provided by the ImageIO tools and JAI libraries. @author Bryce Nordgren, USDA Forest Service @author Simone Giannecchini @since 2.1 @source $URL$

        assertEquals("image/tiff", response.getContentType());
        byte[] tiffContents = getBinary(response);
        File file = File.createTempFile("bm_gtiff", "bm_gtiff.tiff", new File("./target"));
        FileUtils.writeByteArrayToFile(file, tiffContents);   
    
        GeoTiffReader readerTarget = new GeoTiffReader(file);
        GridCoverage2D targetCoverage = null;
        try {
            targetCoverage = readerTarget.read(null);
            final CoordinateReferenceSystem targetCRS=CRS.decode("EPSG:3857", true);
            Assert.assertTrue(CRS.equalsIgnoreMetadata(targetCoverage.getCoordinateReferenceSystem(), targetCRS));            
    
            // checks
            final GridEnvelope gridRange = targetCoverage.getGridGeometry().getGridRange();
            
            final GeneralEnvelope expectedEnvelope= new GeneralEnvelope(
                    new double[]{1.6308305401213994E7,-5543147.203861462},
                    new double[]{1.6475284637403902E7,-5311971.846945147});    
            expectedEnvelope.setCoordinateReferenceSystem(targetCRS);
    
            final double scale = getScale(targetCoverage);
            assertEnvelopeEquals(expectedEnvelope,scale,(GeneralEnvelope) targetCoverage.getEnvelope(),scale);
            assertEquals(gridRange.getSpan(0), 360);
            assertEquals(gridRange.getSpan(1), 360);
            
        } finally {
            try{
                readerTarget.dispose();
            } catch (Exception e) {
                // TODO: handle exception
            }
            try{
                scheduleForCleaning(targetCoverage);

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    @Test
    public void trim() throws Exception {
        
        // check we can read it as a TIFF and it is similar to the original one
        GridCoverage2D targetCoverage = null, sourceCoverage=null;
        GeoTiffReader readerTarget = null;
        try {            
            
            // source 
            sourceCoverage=(GridCoverage2D) this.getCatalog().getCoverageByName("BlueMarble").getGridCoverageReader(null, null).read(null);
            final Envelope2D sourceEnvelope = sourceCoverage.getEnvelope2D();
            
            // subsample using the original extension
            MockHttpServletResponse response = getAsServletResponse("wcs?request=GetCoverage&service=WCS&version=2.0.1" +
                            "&coverageId=wcs__BlueMarble&&Format=image/tiff" +
                            "&subset=http://www.opengis.net/def/axis/OGC/0/Long(" +sourceEnvelope.x+","+(sourceEnvelope.x+sourceEnvelope.width/2)+")"+
                            "&subset=http://www.opengis.net/def/axis/OGC/0/Lat(" +sourceEnvelope.y+","+(sourceEnvelope.y+sourceEnvelope.height/2)+")");
            
            assertEquals("image/tiff", response.getContentType());
            byte[] tiffContents = getBinary(response);
            File file = File.createTempFile("bm_gtiff", "bm_gtiff.tiff", new File("./target"));
            FileUtils.writeByteArrayToFile(file, tiffContents);
            readerTarget = new GeoTiffReader(file);
            targetCoverage = readerTarget.read(null);
            
            // checks
            assertEquals(sourceCoverage.getCoordinateReferenceSystem(), targetCoverage.getCoordinateReferenceSystem());
            assertEquals(180, targetCoverage.getGridGeometry().getGridRange().getSpan(0));
            assertEquals(180, targetCoverage.getGridGeometry().getGridRange().getSpan(1));
            assertEquals(0, targetCoverage.getGridGeometry().getGridRange().getLow(0));
            assertEquals(0, targetCoverage.getGridGeometry().getGridRange().getLow(1));
        
            // === request does not intersect 
            response = getAsServletResponse("wcs?request=GetCoverage&service=WCS&version=2.0.1"
                    + "&coverageId=wcs__BlueMarble&&Format=image/tiff"+
                    "&subset=http://www.opengis.net/def/axis/OGC/0/Long(" +(sourceEnvelope.x+1.1*sourceEnvelope.width)+","+(sourceEnvelope.x+1.2*sourceEnvelope.width)+")"+
                    "&subset=http://www.opengis.net/def/axis/OGC/0/Lat(" +(sourceEnvelope.y+1.1*sourceEnvelope.height)+","+(sourceEnvelope.y+1.2*sourceEnvelope.height)
            +")");    
            assertEquals("application/xml", response.getContentType());
            checkOws20Exception(response, 404, WCS20ExceptionCode.InvalidSubsetting.getExceptionCode(),"");
            
            // === trim low > high Lat
            response = getAsServletResponse("wcs?request=GetCoverage&service=WCS&version=2.0.1"
                    + "&coverageId=wcs__BlueMarble&&Format=image/tiff"+
                    "&subset=http://www.opengis.net/def/axis/OGC/0/Long(" +(sourceEnvelope.x)+","+(sourceEnvelope.x+sourceEnvelope.width)+")"+
                    "&subset=http://www.opengis.net/def/axis/OGC/0/Lat(" +(sourceEnvelope.y+sourceEnvelope.height)+","+(sourceEnvelope.y)
            +")");    
            assertEquals("application/xml", response.getContentType());
            checkOws20Exception(response, 404, WCS20ExceptionCode.InvalidSubsetting.getExceptionCode(),Double.toString((sourceEnvelope.y+sourceEnvelope.height)));
        } finally {
            try{
                if(readerTarget!=null){
                    readerTarget.dispose();
                }
            } catch (Exception e) {
                LOGGER.log(Level.WARNING,e.getLocalizedMessage(),e);
            }
            try{

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    @Test
    public void sliceError() throws Exception{
        
        // check we can read it as a TIFF and it is similare to the original one
        GridCoverage2D targetCoverage = null, sourceCoverage=null;
        GeoTiffReader readerTarget = null;
        try {            
            
            // === slicing on LONG
            // source 
            sourceCoverage=(GridCoverage2D) this.getCatalog().getCoverageByName("BlueMarble").getGridCoverageReader(null, null).read(null);
            final Envelope2D sourceEnvelope = sourceCoverage.getEnvelope2D();


            
            // === error slice point outside coverage
            MockHttpServletResponse response = getAsServletResponse("wcs?request=GetCoverage&service=WCS&version=2.0.1" +
                    "&coverageId=wcs__BlueMarble&&Format=image/tiff" +
                    "&subset=http://www.opengis.net/def/axis/OGC/0/Long(" +sourceEnvelope.x+","+(sourceEnvelope.x+sourceEnvelope.width)+")"+
                    "&subset=http://www.opengis.net/def/axis/OGC/0/Lat(" +sourceEnvelope.y*0.9+")");           
            assertEquals("application/xml", response.getContentType());
            checkOws20Exception(response, 404, WCS20ExceptionCode.InvalidSubsetting.getExceptionCode(), Double.toString(sourceEnvelope.y*0.9));  
            
            // === error slice point outside coverage
            response = getAsServletResponse("wcs?request=GetCoverage&service=WCS&version=2.0.1" +
                    "&coverageId=wcs__BlueMarble&&Format=image/tiff" +
                    "&subset=http://www.opengis.net/def/axis/OGC/0/Long(" +sourceEnvelope.x*0.9+")"+
                    "&subset=http://www.opengis.net/def/axis/OGC/0/Lat(" +sourceEnvelope.y+","+(sourceEnvelope.y+sourceEnvelope.height/2)+")");           
            assertEquals("application/xml", response.getContentType());
            checkOws20Exception(response, 404, WCS20ExceptionCode.InvalidSubsetting.getExceptionCode(), Double.toString(sourceEnvelope.x*0.9)); 
        } finally {
            try{
                if(readerTarget!=null){
                    readerTarget.dispose();
                }
            } catch (Exception e) {
                LOGGER.log(Level.WARNING,e.getLocalizedMessage(),e);
            }
            try{

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    @Test
        public void slice() throws Exception {
            
            // check we can read it as a TIFF and it is similare to the original one
            GridCoverage2D targetCoverage = null, sourceCoverage=null;
            GeoTiffReader readerTarget = null;
            try {            
                
                // === slicing on LONG
                // source 
                sourceCoverage=(GridCoverage2D) this.getCatalog().getCoverageByName("BlueMarble").getGridCoverageReader(null, null).read(null);
                final Envelope2D sourceEnvelope = sourceCoverage.getEnvelope2D();
                
                // subsample using the original extension
                MockHttpServletResponse response = getAsServletResponse("wcs?request=GetCoverage&service=WCS&version=2.0.1" +
                                "&coverageId=wcs__BlueMarble&&Format=image/tiff" +
                                "&subset=http://www.opengis.net/def/axis/OGC/0/Long(" +sourceEnvelope.x+")"+
                                "&subset=http://www.opengis.net/def/axis/OGC/0/Lat(" +sourceEnvelope.y+","+(sourceEnvelope.y+sourceEnvelope.height/2)+")");
                
                assertEquals("image/tiff", response.getContentType());
                byte[] tiffContents = getBinary(response);
                File file = File.createTempFile("bm_gtiff", "bm_gtiff.tiff", new File("./target"));
                FileUtils.writeByteArrayToFile(file, tiffContents);
                readerTarget = new GeoTiffReader(file);
                targetCoverage = readerTarget.read(null);
                
                // checks
                assertEquals(sourceCoverage.getCoordinateReferenceSystem(), targetCoverage.getCoordinateReferenceSystem());
                assertEquals(1, targetCoverage.getGridGeometry().getGridRange().getSpan(0));
                assertEquals(180, targetCoverage.getGridGeometry().getGridRange().getSpan(1));
                assertEquals(0, targetCoverage.getGridGeometry().getGridRange().getLow(0));
                assertEquals(0, targetCoverage.getGridGeometry().getGridRange().getLow(1));
                


            } finally {
                try{
                    if(readerTarget!=null){
                        readerTarget.dispose();
                    }
                } catch (Exception e) {
                    LOGGER.log(Level.WARNING,e.getLocalizedMessage(),e);
                }
                try{

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        assertEquals("image/tiff", response.getContentType());
        byte[] tiffContents = getBinary(response);
        File file = File.createTempFile("gtiff", "gtiff.tiff", new File("./target"));
        FileUtils.writeByteArrayToFile(file, tiffContents);
    
        final GeoTiffReader reader = new GeoTiffReader(file);
        assertTrue(CRS.equalsIgnoreMetadata(reader.getCoordinateReferenceSystem(), CRS.decode("EPSG:32611",true)));
        assertEquals(68, reader.getOriginalGridRange().getSpan(0));
        assertEquals(56 , reader.getOriginalGridRange().getSpan(1));
        final GridCoverage2D coverage = reader.read(null);
        assertEquals(3, coverage.getSampleDimensions().length);
        
        GridCoverage2D sourceCoverage = (GridCoverage2D) this.getCatalog().getCoverageByName("multiband").getGridCoverageReader(null, null).read(null);
        assertEnvelopeEquals(sourceCoverage, coverage);
        reader.dispose();  
        scheduleForCleaning(coverage);
        scheduleForCleaning(sourceCoverage);   
    }

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        assertEquals("image/tiff", response.getContentType());
        byte[] tiffContents = getBinary(response);
        File file = File.createTempFile("gtiff", "gtiff.tiff", new File("./target"));
        FileUtils.writeByteArrayToFile(file, tiffContents);
    
        final GeoTiffReader reader = new GeoTiffReader(file);
        assertTrue(CRS.equalsIgnoreMetadata(reader.getCoordinateReferenceSystem(), CRS.decode("EPSG:32611",true)));
        assertEquals(68, reader.getOriginalGridRange().getSpan(0));
        assertEquals(56 , reader.getOriginalGridRange().getSpan(1));
        final GridCoverage2D coverage = reader.read(null);
        assertEquals(4, coverage.getSampleDimensions().length);
        
        GridCoverage2D sourceCoverage = (GridCoverage2D) this.getCatalog().getCoverageByName("multiband").getGridCoverageReader(null, null).read(null);
        assertEnvelopeEquals(sourceCoverage, coverage);
        reader.dispose();  
        scheduleForCleaning(coverage);
        scheduleForCleaning(sourceCoverage);   
    }

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        assertEquals("image/tiff", response.getContentType());
        byte[] tiffContents = getBinary(response);
        File file = File.createTempFile("gtiff", "gtiff.tiff", new File("./target"));
        FileUtils.writeByteArrayToFile(file, tiffContents);
    
        final GeoTiffReader reader = new GeoTiffReader(file);
        assertTrue(CRS.equalsIgnoreMetadata(reader.getCoordinateReferenceSystem(), CRS.decode("EPSG:32611",true)));
        assertEquals(68, reader.getOriginalGridRange().getSpan(0));
        assertEquals(56 , reader.getOriginalGridRange().getSpan(1));
        final GridCoverage2D coverage = reader.read(null);
        assertEquals(7, coverage.getSampleDimensions().length);
        
        GridCoverage2D sourceCoverage = (GridCoverage2D) this.getCatalog().getCoverageByName("multiband").getGridCoverageReader(null, null).read(null);
        assertEnvelopeEquals(sourceCoverage, coverage);
        reader.dispose();  
        scheduleForCleaning(coverage);
        scheduleForCleaning(sourceCoverage);   
    }

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        assertEquals("image/tiff", response.getContentType());
        byte[] tiffContents = getBinary(response);
        File file = File.createTempFile("bm_gtiff", "bm_gtiff.tiff", new File("./target"));
        FileUtils.writeByteArrayToFile(file, tiffContents);
    
        final GeoTiffReader reader = new GeoTiffReader(file);
        assertTrue(CRS.equalsIgnoreMetadata(reader.getCoordinateReferenceSystem(), CRS.decode("EPSG:4326",true)));
        assertEquals(360, reader.getOriginalGridRange().getSpan(0));
        assertEquals(360, reader.getOriginalGridRange().getSpan(1));
        final GridCoverage2D coverage = reader.read(null);
        assertEquals(1, coverage.getSampleDimensions().length);
        
        GridCoverage2D sourceCoverage = (GridCoverage2D) this.getCatalog().getCoverageByName("BlueMarble").getGridCoverageReader(null, null).read(null);
        assertEnvelopeEquals(sourceCoverage, coverage);
        reader.dispose();  
        scheduleForCleaning(coverage);
        scheduleForCleaning(sourceCoverage);   
    }

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        assertEquals("image/tiff", response.getContentType());
        byte[] tiffContents = getBinary(response);
        File file = File.createTempFile("bm_gtiff", "bm_gtiff.tiff", new File("./target"));
        FileUtils.writeByteArrayToFile(file, tiffContents);
    
        final GeoTiffReader reader = new GeoTiffReader(file);
        assertTrue(CRS.equalsIgnoreMetadata(reader.getCoordinateReferenceSystem(), CRS.decode("EPSG:4326",true)));
        assertEquals(360, reader.getOriginalGridRange().getSpan(0));
        assertEquals(360, reader.getOriginalGridRange().getSpan(1));
        final GridCoverage2D coverage = reader.read(null);
        assertEquals(3, coverage.getSampleDimensions().length);
        
        GridCoverage2D sourceCoverage = (GridCoverage2D) this.getCatalog().getCoverageByName("BlueMarble").getGridCoverageReader(null, null).read(null);
        assertEnvelopeEquals(sourceCoverage, coverage);
        reader.dispose();  
        scheduleForCleaning(coverage);
        scheduleForCleaning(sourceCoverage);   
    }

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        assertEquals("image/tiff", response.getContentType());
        byte[] tiffContents = getBinary(response);
        File file = File.createTempFile("bm_gtiff", "bm_gtiff.tiff", new File("./target"));
        FileUtils.writeByteArrayToFile(file, tiffContents);


        final GeoTiffReader reader = new GeoTiffReader(file);
        assertTrue(CRS.equalsIgnoreMetadata(reader.getCoordinateReferenceSystem(), CRS.decode("EPSG:4326",true)));
        assertEquals(360, reader.getOriginalGridRange().getSpan(0));
        assertEquals(360, reader.getOriginalGridRange().getSpan(1));
        final GridCoverage2D coverage = reader.read(null);
        assertEquals(5, coverage.getSampleDimensions().length);
        
        GridCoverage2D sourceCoverage = (GridCoverage2D) this.getCatalog().getCoverageByName("BlueMarble").getGridCoverageReader(null, null).read(null);
        assertEnvelopeEquals(sourceCoverage, coverage);
        reader.dispose();  
        scheduleForCleaning(coverage);
        scheduleForCleaning(sourceCoverage);   
    }

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