Examples of org.opengis.coverage.grid.GridCoverageWriter

org.opengis.coverage.grid.GridCoverageWriter
Support for writing grid coverages into a persistent store. Instance of {@code GridCoverageWriter} are obtained through a call to{@link GridCoverageExchange#getWriter}. Grid coverages are usually added to the output stream in a sequential order. @author Martin Desruisseaux (IRD) @since GeoAPI 2.0 @see GridCoverageExchange#getWriter @see javax.imageio.ImageWriter @source $URL$


    public static void writeGridCoverageFromGrassraster( File mapFile, JGrassRegion writeRegion, GridCoverage2D grassCoverage )
            throws Exception {
        JGrassMapEnvironment mapEnvironment = new JGrassMapEnvironment(mapFile);
        GrassCoverageFormat format = new GrassCoverageFormatFactory().createFormat();
        GridCoverageWriter writer = format.getWriter(mapEnvironment.getCELL(), null);


        GeneralParameterValue[] readParams = null;
        if (writeRegion == null) {
            writeRegion = mapEnvironment.getActiveRegion();
        }
        readParams = JGrassCatalogUtilities.createGridGeometryGeneralParameter(writeRegion.getCols(), writeRegion.getRows(),
                writeRegion.getNorth(), writeRegion.getSouth(), writeRegion.getEast(), writeRegion.getWest(),
                mapEnvironment.getCoordinateReferenceSystem());


        writer.write(grassCoverage, readParams);
    }

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                                    geodata = geodata.view(ViewType.GEOPHYSICS);


                                    File mapsetFile = oldMapEnvironment.getMAPSET();
                                    JGrassMapEnvironment newMapEnvironment = new JGrassMapEnvironment(mapsetFile, newMapName);
                                    format = new GrassCoverageFormatFactory().createFormat();
                                    GridCoverageWriter writer = format.getWriter(newMapEnvironment.getCELL(), null);
                                    writer.write(geodata, null);


                                    JGrassCatalogUtilities.addMapToCatalog(mapsetFile.getParent(), mapsetFile.getName(),
                                            newMapName, JGrassConstants.GRASSBINARYRASTERMAP);


                                }

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                                    String mapName = mapFile.getName();
                                    mapName = FilenameUtils.getBaseName(mapName);
                                    JGrassMapEnvironment mapEnvironment = new JGrassMapEnvironment(mapsetFile, mapName);
                                    GrassCoverageFormat format = new GrassCoverageFormatFactory().createFormat();
                                    GridCoverageWriter writer = format.getWriter(mapEnvironment.getCELL(), null);


                                    GeneralParameterValue[] readParams = null;
                                    writer.write(geodata, readParams);


                                    JGrassCatalogUtilities.addMapToCatalog(mapsetFile.getParent(), mapsetFile.getName(), mapName,
                                            JGrassConstants.GRASSBINARYRASTERMAP);
                                    pm.worked(1);
                                }

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        // creating a zip outputstream
        final ZipOutputStream outZ = new ZipOutputStream(output);
        output = outZ;


        // creating a writer
        final GridCoverageWriter writer = new GTopo30Writer(outZ);


        // writing
        if (writer != null) {
            writer.write(sourceCoverage, null);
        } else {
            throw new ServiceException("Could not create a writer for the format Gtopo30!");
        }


        // freeing everything
        writer.dispose();
        this.sourceCoverage.dispose(false);
        this.sourceCoverage = null;
    }

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            gzipOut = new GZIPOutputStream(output);
            output = gzipOut;
        }


        try {
            final GridCoverageWriter writer = new ArcGridWriter(output);
            final ParameterValueGroup params = writer.getFormat().getWriteParameters();
            //params.parameter("Compressed").setValue(compressOutput);
            writer.write(sourceCoverage, null);


            if (gzipOut != null) {
                gzipOut.finish();
                gzipOut.flush();
            }


            // freeing everything
            writer.dispose();
            this.sourceCoverage.dispose(false);
            this.sourceCoverage = null;
        } catch (Exception e) {
            throw new WcsException(new StringBuffer("Problems Rendering Image").append(
                    e.getMessage()).toString(), e);

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        final ParameterValueGroup writerParams = format.getWriteParameters();
        writerParams.parameter(AbstractGridFormat.GEOTOOLS_WRITE_PARAMS.getName().toString())
                    .setValue(wp);


        GridCoverageWriter writer = format.getWriter(output);
        writer.write(sourceCoverage,
            (GeneralParameterValue[]) writerParams.values().toArray(new GeneralParameterValue[1]));


        writer.dispose();


        this.sourceCoverage.dispose(false);
        this.sourceCoverage = null;
    }

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    public void encode(OutputStream output) throws ServiceException, IOException {
        if (sourceCoverage == null) {
            throw new IllegalStateException("It seems prepare() has not been called or has not succeed");
        }


        final GridCoverageWriter writer = new WorldImageWriter(output);


        // writing parameters for Image
        final Format writerParams = writer.getFormat();
        final ParameterValueGroup writeParameters = writerParams.getWriteParameters();
        final ParameterValue format = writeParameters.parameter("Format");
        format.setValue(this.outputFormat.toLowerCase());


        // writing
        writer.write(sourceCoverage, new GeneralParameterValue[] {format});


        // freeing everything
        output.flush();
        writer.dispose();
        this.sourceCoverage.dispose(false);
        this.sourceCoverage = null;
    }

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    // WRITING AND TESTING
    //
    //
    // /////////////////////////////////////////////////////////////////////
    final File writeFile = new File(new StringBuilder(writedir.getAbsolutePath()).append(File.separatorChar).append(cropped.getName().toString()).append(".tiff").toString());
    final GridCoverageWriter writer = format.getWriter(writeFile);
    
    try{
      writer.write(cropped, null);
    }catch (IOException e) {
    }
    finally{
      try{
        writer.dispose();
      }catch (Throwable e) {
      }
    }
    try{
      reader = new GeoTiffReader(writeFile, null);

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        //
        //
        // /////////////////////////////////////////////////////////////////////
        final File writeFile = new File(writedir.getAbsolutePath() + File.separatorChar 
                + cropped.getName().toString() + ".tiff");
        final GridCoverageWriter writer = format.getWriter(writeFile);
        // /////////////////////////////////////////////////////////////////////
        //
        // Create the writing params
        //
        // /////////////////////////////////////////////////////////////////////
        try {
            writer.write(cropped, null);
        } catch (IOException e) {
        } finally {
            try {
                writer.dispose();
            } catch (Throwable e) {
            }
        }
        
        // release things

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      File testDir = TestData.file(this, "");
      newDir = new File(testDir.getAbsolutePath() + "/newDir");
      newDir.mkdir();


      // writing it down
      GridCoverageWriter writer = format.getWriter(newDir);
      writer.write(gc, null);


      /**
       * 
       * STEP 2 Reading back into memory the previos coverage.
       *

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org.geotools.gce.gtopo30.GT30ReaderWriterTest

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