Examples of org.geotools.coverage.grid.GridCoverage2D$Renderable

org.geotools.coverage.grid.GridCoverage2D
sun.com/products/java-media/2D/">Java2D for a two-dimensional slice of a grid coverage. @version $Id$ @author Martin Desruisseaux (IRD) @see AbstractCoverage#getRenderableImage @todo Override {@link #createRendering} and use the affine transform operation.Also uses the JAI's "Transpose" operation is x and y axis are interchanged.

        try {
            File rasterFile = new File(sourceFilename);
            // determine file format and CRS, then load raster
            AbstractGridFormat format = GridFormatFinder.findFormat(rasterFile);
            AbstractGridCoverage2DReader reader = format.getReader(rasterFile);
            GridCoverage2D coverage = reader.read(null);
            this.coverageCRS = coverage.getCoordinateReferenceSystem();
            GridGeometry2D gridGeometry = coverage.getGridGeometry();
            GridEnvelope2D gridEnvelope = gridGeometry.getGridRange2D();
            gridGeometry.getGridToCRS();
            // because we may want to produce an empty raster rather than loading one, alongside the coverage we 
            // store the row/col dimensions and the referenced envelope in the original coordinate reference system.
            this.cols  = gridEnvelope.width;

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     * {@link org.geotools.coverage.processing.DefaultProcessor}
     * for the {@code "Resample"} operation.
     */
    @SuppressWarnings("unchecked")
    public Coverage doOperation(final ParameterValueGroup parameters, final Hints hints) {
        final GridCoverage2D source = (GridCoverage2D) parameters.parameter("Source").getValue();
        final Interpolation interpolation = ImageUtilities.toInterpolation(
                parameters.parameter("InterpolationType").getValue());
        CoordinateReferenceSystem targetCRS = (CoordinateReferenceSystem)
                parameters.parameter("CoordinateReferenceSystem").getValue();
        if (targetCRS == null) {
            targetCRS = source.getCoordinateReferenceSystem();
        }
        final GridGeometry2D targetGG = GridGeometry2D.wrap(
                (GridGeometry) parameters.parameter("GridGeometry").getValue());
        final Object bgValueParam = parameters.parameter("BackgroundValues");
        final double [] bgValues;
        if (bgValueParam != null && bgValueParam instanceof Parameter<?>){
            bgValues = ((Parameter<double[]>)bgValueParam).getValue();
        } else {
            bgValues = null;
        }
        try {
            return Resampler2D.reproject(source, targetCRS, targetGG, interpolation,
                (hints instanceof Hints) ? hints : new Hints(hints), bgValues);
        } catch (FactoryException exception) {
            throw new CannotReprojectException(Errors.format(
                    ErrorKeys.CANT_REPROJECT_$1, source.getName()), exception);
        } catch (TransformException exception) {
            throw new CannotReprojectException(Errors.format(
                    ErrorKeys.CANT_REPROJECT_$1, source.getName()), exception);
        }
    }

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        try {
            String[] names = reader.getGridCoverageNames();
            assertNotNull(names);
            assertEquals(2,names.length);
            assertEquals("ROOT/LEVEL1/V2",names[0]);
            GridCoverage2D grid = reader.read("ROOT/LAI", null);
            assertNotNull(grid);
            byte[] byteValue = grid.evaluate(new
                    DirectPosition2D(DefaultGeographicCRS.WGS84, 12, 70 ), new byte[1]);
            assertEquals(20,byteValue[0]);


            byteValue = grid.evaluate(new
                    DirectPosition2D(DefaultGeographicCRS.WGS84, 23, 40), new byte[1]);
            assertEquals(90,byteValue[0]);




        } finally {

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        try {
            String[] names = reader.getGridCoverageNames();
            assertNotNull(names);
            assertEquals(2,names.length);


            GridCoverage2D grid = reader.read("O3", null);
            assertNotNull(grid);
            float[] value = grid.evaluate((DirectPosition) new
                    DirectPosition2D(DefaultGeographicCRS.WGS84, 5, 45 ), new float[1]);
            assertEquals(47.63341f,value[0],0.00001);


            value = grid.evaluate((DirectPosition) new
                    DirectPosition2D(DefaultGeographicCRS.WGS84, 5, 45.125), new float[1]);
            assertEquals(52.7991f, value[0],0.000001);




        } finally {

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                        add(450d); // Elevation
                    }
                });


                GeneralParameterValue[] values = new GeneralParameterValue[] { gg, time, elevation };
                GridCoverage2D coverage = reader.read(coverageName, values);
                assertNotNull(coverage);
                if (TestData.isInteractiveTest()) {
                    coverage.show();
                } else {
                    PlanarImage.wrapRenderedImage(coverage.getRenderedImage()).getTiles();
                }
            }
        } catch (Throwable t) {
            throw new RuntimeException(t);
        } finally {

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                FilterFactory2 FF = FeatureUtilities.DEFAULT_FILTER_FACTORY;
                Filter filter = FF.equals(FF.property("z"), FF.literal(450.0));
                filterParam.setValue(filter);


                GeneralParameterValue[] values = new GeneralParameterValue[] { filterParam };
                GridCoverage2D coverage = reader.read(coverageName, values);
                assertNotNull(coverage);
                if (TestData.isInteractiveTest()) {
                    coverage.show();
                } else {
                    PlanarImage.wrapRenderedImage(coverage.getRenderedImage()).getTiles();
                }
            }
        } catch (Throwable t) {
            throw new RuntimeException(t);
        } finally {

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                    }
                });


                GeneralParameterValue[] values = coverageName.equalsIgnoreCase("O3") ? new GeneralParameterValue[] { gg, time, elevation } : new GeneralParameterValue[] { gg, time};
                
                GridCoverage2D coverage = reader.read(coverageName, values);
                assertNotNull(coverage);
                if (TestData.isInteractiveTest()) {
                    coverage.show();
                } else {
                    PlanarImage.wrapRenderedImage(coverage.getRenderedImage()).getTiles();
                }
            }
        } catch (Throwable t) {
            throw new RuntimeException(t);
        } finally {

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                    }
                });


                GeneralParameterValue[] values = coverageName.equalsIgnoreCase("O3") ? new GeneralParameterValue[] { gg, time, elevation } : new GeneralParameterValue[] { gg, time};
                
                GridCoverage2D coverage = reader.read(coverageName, values);
                assertNotNull(coverage);
                if (TestData.isInteractiveTest()) {
                    coverage.show();
                } else {
                    PlanarImage.wrapRenderedImage(coverage.getRenderedImage()).getTiles();
                }
            }
        } catch (Throwable t) {
            throw new RuntimeException(t);
        } finally {

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                      });
                  }
              }
              
              GeneralParameterValue[] values = new GeneralParameterValue[] { gg, sigmaValue};
              GridCoverage2D coverage = reader.read(coverageName, values);
              assertNotNull(coverage);
              if (TestData.isInteractiveTest()) {
                  coverage.show();
              } else {
                  PlanarImage.wrapRenderedImage(coverage.getRenderedImage()).getTiles();
              }
          }
      } catch (Throwable t) {
          throw new RuntimeException(t);
      } finally {

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                    });
                } 
            }


            GeneralParameterValue[] values = new GeneralParameterValue[] { gg,new_ };
            GridCoverage2D coverage = reader.read(coverageName, values);
            assertNotNull(coverage);
            if (TestData.isInteractiveTest()) {
                coverage.show();
            } else {
                PlanarImage.wrapRenderedImage(coverage.getRenderedImage()).getTiles();
            }
        } finally {
            if (reader != null) {
                try {
                    reader.dispose();

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