code: public float getFloatPixelValue(GriddedTile griddedTile, Double value) {
  
  		double pixel = 0;
  		if (value == null) {
  			if (griddedCoverage != null) {
  				pixel = griddedCoverage.getDataNull();
  			}
  		} else {
  			pixel = valueToPixelValue(griddedTile, value);
  		}
  
  		float pixelValue = (float) pixel;
  
  		return pixelValue;
  	}
docs: Get the pixel value of the coverage data value
  
  @param griddedTile
  gridded tile
  @param value
  coverage data value
  @return pixel value