Package org.geotools.gce.grassraster.core

Class GrassBinaryRasterWriteHandler

Object
GrassBinaryRasterWriteHandler
All Implemented Interfaces:
Closeable, AutoCloseable
public class GrassBinaryRasterWriteHandler extends Object implements Closeable
Grass binary data input/ouput handler.

Reading and writing is supported.

Since:
3.0
Author:
Andrea Antonello (www.hydrologis.com)
See Also:

  • Constructor Details

    • GrassBinaryRasterWriteHandler

      public GrassBinaryRasterWriteHandler(File destMapset, String newMapName, ProgressListener monitor)
      A constructor to build a GrassBinaryRasterWriteHandler usable for writing grass rasters.
      Parameters:
      destMapset - the mapset file into which the map has to be written.
      newMapName - the name for the written map.

  • Method Details

    • writeRaster

      public void writeRaster(RenderedImage renderedImage, int columns, int rows, double west, double south, double xRes, double yRes, double noDataValue) throws IOException
      Writes the raster, given an raster iterator and region metadata.
      Parameters:
      renderedImage - the RenderedImage to write.
      columns - the columns of the raster to write.
      rows - the rows of the raster to write.
      west - the western bound of the raster to write.
      south - the southern bound of the raster to write.
      xRes - the east-west resolution of the raster to write.
      yRes - the north-south resolution of the raster to write.
      noDataValue - the value representing noData.
      Throws:
      IOException

    • getWriteRegion

      public JGrassRegion getWriteRegion() throws IOException
      Calculates the region that is going to be written.
      Returns:
      the region that will be written by this Writer.
      Throws:
      IOException

    • setWriteRegion

      public void setWriteRegion(JGrassRegion writeRegion)

    • close

      public void close() throws IOException
      Closes the I/O streams.
      Specified by:
      close in interface AutoCloseable
      Specified by:
      close in interface Closeable
      Throws:
      IOException

    • setNoData

      public void setNoData(double noData)
      Setter for the noData value.
      Parameters:
      noData - the nodata value to set.

    • getNoData

      public double getNoData()
      Getter for the noData value.
      Returns:
      the nodata value.

    • getCrs

      public CoordinateReferenceSystem getCrs() throws IOException
      Reads the crs definition for the map.

      The definition for grass maps is held in the location. Grass projection definitions are usually in a non parsable internal format. In JGrass we ask the user to choose the CRS. If the user doesn't do so, the CRS will result to be undefined.

      Returns:
      the CoordinateReferenceSystem for the map. Null if it is not defined.
      Throws:
      IOException - if there were problems in parsing the CRS file.

    • abort

      public void abort()
      sets the abortrequired flag to true.

      As soon as possible that should abort the reader.

    • isAborting

      public boolean isAborting()
      Getter for the abortrequired flag.
      Returns:
      the abortRequired flag.