Package org.esa.snap.core.dataop.dem

Interface ElevationModelDescriptor

  • All Known Implementing Classes:
    AbstractElevationModelDescriptor
    public interface ElevationModelDescriptor
    An ElevationModel is used to obtain an elevation above a specified geographical datum for a given geographical position.

    • Method Detail

      • getName

        String getName()
        The name of this elevation source, e.g. "GTOPO30"
        Returns:
        a name

      • getNoDataValue

        float getNoDataValue()
        Gets the no-data value for this elevation map.
        Returns:
        the no-data value, e.g. -99999

      • getRasterWidth

        int getRasterWidth()
        Gets the (raster) width of this elevation map.
        Returns:
        the width value, e.g. 15000

      • getRasterHeight

        int getRasterHeight()
        Gets the (raster) height of this elevation map.
        Returns:
        the (raster) height value, e.g. 30000

      • getTileWidthInDegrees

        int getTileWidthInDegrees()
        Gets the width of a tile in degrees.
        Returns:
        the width of a tile in degrees, e.g. 15

      • getTileWidth

        int getTileWidth()
        Gets the width of a tile in pixels.
        Returns:
        the width of a tile in pixels, e.g. 1800

      • getTileHeight

        default int getTileHeight()
        Gets the height of a tile in pixels. Note for most dem tiles the width and height are the same
        Returns:
        the height of a tile in pixels, e.g. 1800

      • getNumXTiles

        int getNumXTiles()
        Gets the number of tiles in x direction
        Returns:
        number of rows

      • getNumYTiles

        int getNumYTiles()
        Gets the number of tiles in y direction
        Returns:
        number of columns

      • createDem

        ElevationModel createDem​(Resampling resampling)
        Creates the elevation model instance.
        Parameters:
        resampling - The resampling method to be used.
        Returns:
        a DEM instance, can be null e.g. if related DEM files are not installed
        Since:
        BEAM 4.6

      • canBeDownloaded

        boolean canBeDownloaded()
        Returns true if the DEM can be automatically downloaded
        Returns:
        true if auto download

      • getDemInstallDir

        File getDemInstallDir()
        Returns the directory (if any) where the DEM files shall be located.
        Returns:
        the DEM file directory