Examples of org.geotools.coverage.grid.GridCoverageFactory

org.geotools.coverage.grid.GridCoverageFactory
A factory for {@linkplain GridCoverage2D grid coverage} objects. This factory expects variouscombinaisons of the following informations:
- A name as a {@linkplain CharSequence character sequence}.
- A {@linkplain WritableRaster raster}, or an {@linkplain RenderedImage image}, or an {@linkplain ImageFunction image function}, or a matrix of kind {@code float[][]}.
- A ( {@linkplain CoordinateReferenceSystem coordinate reference system} -{@linkplain MathTransform transform}) pair, or an {@linkplain Envelope envelope}, or a {@linkplain GridGeometry2D grid geometry}. The envelope is easier to use, while the transform provides more control.
- Information about each {@linkplain GridSampleDimension sample dimensions} (oftencalled bands in the particular case of images), or minimal and maximal expected values for each bands.
- Optional properties as a {@linkplain Map map} of key-value pairs."Properties" in Java Advanced Imaging are called "Metadata" by OpenGIS. Keys are {@link String} objects ({@link CaselessStringKey} are accepted as well), whilevalues may be any {@link Object}.
The {@linkplain CoordinateReferenceSystem coordinate reference system} is inferred from thesupplied {@linkplain Envelope envelope} or {@linkplain GridGeometry2D grid geometry} parameters.If those parameters do not have CRS information, then this factory fallback on a {@linkplain #getDefaultCRS default CRS}.

Every {@code create} methods will ultimately delegate their work to a master{@link #create(CharSequence,RenderedImage,GridGeometry2D,GridSampleDimension[],GridCoverage[],Map) create} variant. Developpers can override this method if theywant to intercept the creation of all {@link GridCoverage2D} objects in this factory.
@since 2.1 @author Martin Desruisseaux @source $URL$ @version $Id$

                    image.setSample(x, y, band, rand.nextInt(256));
                }
            }
        }
        
        GridCoverageFactory gcf = CoverageFactoryFinder.getGridCoverageFactory(null);
        GridCoverage2D coverage = gcf.create("cov", image, WORLD);
        
        File file = File.createTempFile("test-image", ".tiff");
        GeoTiffWriter writer = new GeoTiffWriter(file);
        writer.write(coverage, null);
        writer.dispose();

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                raster.setSample(x, y, 0, x + y);
            }
        }
        final CoordinateReferenceSystem crs = DefaultGeographicCRS.WGS84;
        final Envelope envelope = new Envelope2D(crs, 0, 0, 30, 30);
        final GridCoverageFactory factory = CoverageFactoryFinder.getGridCoverageFactory(null);
        return factory.create("My grayscale float coverage", raster, envelope);
    }

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            {1, 2, 3, 4},
            {5, 6, 7, 8}
        };
        
        ReferencedEnvelope env = new ReferencedEnvelope(0, 4, 0, 2, null);
        GridCoverageFactory gcf = CoverageFactoryFinder.getGridCoverageFactory(null);
        GridCoverage2D cov = gcf.create("coverage", data, env);
        Layer layer = new GridCoverageLayer(cov, null);
        
        InfoToolHelper helper = InfoToolHelperLookup.getHelper(layer);
        assertNotNull(helper);
        assertEquals(GridCoverageLayerHelper.class, helper.getClass());

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                    image.setSample(x, y, band, rand.nextInt(256));
                }
            }
        }
        
        GridCoverageFactory gcf = CoverageFactoryFinder.getGridCoverageFactory(null);
        coverage = gcf.create("cov", image, WORLD);
    }

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        GridCoverage2D c2 = crop(test, new GeneralEnvelope(re2));


        // Shift the first image on the right
        ReferencedEnvelope re3 = new ReferencedEnvelope(180, 350, -90, 90,
                DefaultGeographicCRS.WGS84);
        GridCoverage2D shifted = new GridCoverageFactory().create(c2.getName(),
                c2.getRenderedImage(), re3);
        // Envelope containing the bounding box for the two images
        ReferencedEnvelope reUnion = new ReferencedEnvelope(10, 350, -90, 90,
                DefaultGeographicCRS.WGS84);
        // Mosaic operation

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        GridCoverage2D c = (GridCoverage2D) processor.doOperation(paramResampling);


        // first shifted
        ReferencedEnvelope re2 = new ReferencedEnvelope(-540, -180, -85, 85,
                DefaultGeographicCRS.WGS84);
        GridCoverage2D c2 = new GridCoverageFactory()
                .create(c.getName(), c.getRenderedImage(), re2);


        // second shifted
        ReferencedEnvelope re3 = new ReferencedEnvelope(180, 540, -85, 85,
                DefaultGeographicCRS.WGS84);
        GridCoverage2D c3 = new GridCoverageFactory()
                .create(c.getName(), c.getRenderedImage(), re3);


        // third shifted
        ReferencedEnvelope re4 = new ReferencedEnvelope(-540, -900, -85, 85,
                DefaultGeographicCRS.WGS84);
        GridCoverage2D c4 = new GridCoverageFactory()
                .create(c.getName(), c.getRenderedImage(), re4);


        ReferencedEnvelope reUnion = new ReferencedEnvelope(-900, 540, -85, 85,
                DefaultGeographicCRS.WGS84);
        List<GridCoverage2D> sorted = sortCoverages(Arrays.asList(c4, c2, c, c3));

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                } else {
                    properties = Collections.singletonMap("GC_ROI", rasterSpaceROI); 
                }
            }
            
            return new GridCoverageFactory(hints).create(
                sourceCoverage.getName(), 
                croppedImage,
                new GridGeometry2D(
                        new GridEnvelope2D(croppedImage.getBounds()),
                        sourceGridGeometry.getGridToCRS2D(PixelOrientation.CENTER),

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                ge.getNX(), ge.getNY(), numBands, null);


    Envelope envelope = new Envelope2D((CoordinateReferenceSystem)crs,
                      ge.getXMin(), ge.getYMin(),
                      ge.getWidth(), ge.getHeight());
    GridCoverageFactory factory = CoverageFactoryFinder.getGridCoverageFactory(null);
    GridCoverage2D gc = factory.create(name, (WritableRaster)m_Raster, envelope,
        null, null, null, null, null);
    m_BaseDataObject = gc;
    m_sName = name;
    m_sFilename = filename;
    m_LayerExtent = ge;

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                  getBandsCount(), null);


      Envelope envelope = new Envelope2D((CoordinateReferenceSystem)m_CRS,
                  gridExtent.getXMin(), gridExtent.getYMin(),
                  gridExtent.getWidth(), gridExtent.getHeight());
      GridCoverageFactory factory = CoverageFactoryFinder.getGridCoverageFactory(null);


      this.setWindowExtent(gridExtent);
      // FIXME: should this also use tiles???
      for (int x = 0; x < gridExtent.getNX(); x++) {
        for (int y = 0; y < gridExtent.getNY(); y++) {
          for (int i = 0; i < getBandsCount(); i++) {
            raster.setSample(x, y, i, this.getCellValueAsDouble(x, y, i));
          }
        }


      }
      m_BaseDataObject = factory.create(getName(), (WritableRaster)raster, envelope,
                      null, null, null, null, null);


      System.gc();
    }

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        // build the output sample dimensions, use the default value ( 0 ) as the no data
        final GridSampleDimension outSampleDimension = new GridSampleDimension("classification",
                new Category[] { Category.NODATA }, null).geophysics(true);
        final GridCoverageFactory factory = CoverageFactoryFinder.getGridCoverageFactory(null);
        final GridCoverage2D output = factory.create("reclassified", indexedClassification, coverage
                .getGridGeometry(), new GridSampleDimension[] { outSampleDimension },
                new GridCoverage[] { coverage }, new HashMap<String,Double>(){{
                  put("GC_NODATA",0d);
                }});
        return output;

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