code: public short getPixelValue(GriddedTile griddedTile, Double value) {
  		int unsignedPixelValue = getUnsignedPixelValue(griddedTile, value);
  		short pixelValue = getPixelValue(unsignedPixelValue);
  		return pixelValue;
  	}
docs: Get the "unsigned short" pixel value of the coverage data value
  
  @param griddedTile
  gridded tile
  @param value
  coverage data value
  @return "unsigned short" pixel value