Package org.geotools.process.raster

Class CoverageUtilities

Object
CoverageUtilities
public class CoverageUtilities extends Object
A set of utilities methods for the Grid Coverage package. Those methods are not really rigorous; many of them should be seen as temporary implementations.
Author:
Simone Giannecchini, GeoSolutions

  • Field Details

  • Method Details

    • prepareROI

      public static ROI prepareROI(Geometry roi, AffineTransform mt2d) throws ProcessException
      Utility method for transforming a geometry ROI into the raster space, using the provided affine transformation.
      Parameters:
      roi - a Geometry in model space.
      mt2d - an AffineTransform that maps from raster to model space. This is already referred to the pixel corner.
      Returns:
      a ROI suitable for using with JAI.
      Throws:
      ProcessException - in case there are problems with ivnerting the provided AffineTransform. Very unlikely to happen.

    • createFeatureType

      public static SimpleFeatureType createFeatureType(GridCoverage2D gc2d, Class<? extends Geometry> geometryClass)
      Creates a SimpleFeatureType that exposes a coverage as a collections of feature points, mapping the centre of each pixel as a point plus all the bands as attributes.

      The FID is the long that combines x+y*width.

      Parameters:
      gc2d - the GridCoverage2D to wrap.
      geometryClass - the class for the geometry.
      Returns:
      a SimpleFeatureType or null in case we are unable to wrap the coverage

    • createRange

      public static <T extends Number> Range createRange(T minValue, boolean minIncluded, T maxValue, boolean maxIncluded)
      Static create method. This just relieves the tedium of having to call create RangeFactory create method.
      Type Parameters:
      T - value type
      Parameters:
      minValue - the lower bound; passing null for this parameter means an open lower bound; for Float or Double types, the relevant NEGATIVE_INFINITY value can also be used.
      minIncluded - true if the lower bound is to be included in the range; false to exclude the lower bound; overridden to be false if the lower bound is open
      maxValue - the upper bound; passing null for this parameter means an open upper bound; for Float or Double types, the relevant NEGATIVE_INFINITY value can also be used.
      maxIncluded - true if the upper bound is to be included in the range; false to exclude the upper bound; overridden to be false if the upper bound is open
      Returns:
      the new instance

    • getRangeLookupTable

      public static RangeLookupTable getRangeLookupTable(List<Range> classificationRanges, Number noDataValue)

    • getRangeLookupTable

      public static RangeLookupTable getRangeLookupTable(List<Range> classificationRanges, Number noDataValue, Class clazz)

    • getRangeLookupTable

      public static RangeLookupTable getRangeLookupTable(List<Range> classificationRanges, int[] outputPixelValues, Number noDataValue)

    • getRangeLookupTable

      public static RangeLookupTable getRangeLookupTable(List<Range> classificationRanges, int[] outputPixelValues, Number noDataValue, Class<? extends Number> clazz)

    • getRangeLookupTable

      public static RangeLookupTable getRangeLookupTable(List<Range> classificationRanges, int[] outputPixelValues, Number noDataValue, int transferType)
      Setup lookup table from classification ranges.
      Parameters:
      classificationRanges -
      outputPixelValues -
      noDataValue -
      transferType -
      Returns:
      lookup table

    • convert

      public static Number convert(Number val, Class<? extends Number> type)

    • getRegionParamsFromGridCoverage

      public static HashMap<String,Double> getRegionParamsFromGridCoverage(GridCoverage2D gridCoverage)
      Get the parameters of the region covered by the coverage.
      Parameters:
      gridCoverage - the coverage.
      Returns:
      the map of parameters. ( NORTH and the other static vars can be used to retrieve them.

    • getNoDataAsList

      public static List<RangeDouble> getNoDataAsList(GridCoverage2D coverage)
      Retrieves the no data ranges for a given grid coverage.
      Parameters:
      coverage - the grid coverage to extract nodata ranges from
      Returns:
      a list of no data ranges, or null if no nodata ranges are found

    • crop

      public static GridCoverage2D crop(GridCoverage2D coverage, ReferencedEnvelope geometryEnvelope)
      Crops a given grid coverage to the specified geometry envelope using a coverage crop operation.
      Parameters:
      coverage - The source grid coverage to be cropped
      geometryEnvelope - The envelope defining the crop region
      Returns:
      A new GridCoverage2D cropped to the specified envelope

    • getSimplifiedRoiGeometry

      public static ROI getSimplifiedRoiGeometry(GridCoverage2D coverage, Geometry geometry) throws TransformException
      Converts a given geometry to a simplified Region of Interest (ROI) in raster space for a given grid coverage.
      Parameters:
      coverage - The grid coverage defining the raster transformation context
      geometry - The original geometry to be transformed and simplified
      Returns:
      A simplified ROI geometry suitable for raster processing
      Throws:
      TransformException - If the geometry transformation fails