code: protected CoverageDataSourcePixel getYSourceMinAndMax(float source) {
  
  		int floor = (int) Math.floor(source);
  		float valueLocation = getYEncodedLocation(floor,
  				griddedCoverage.getGridCellEncodingType());
  
  		CoverageDataSourcePixel pixel = getSourceMinAndMax(source, floor,
  				valueLocation);
  		return pixel;
  	}
docs: Get the min, max, and offset of the source Y pixel
  
  @param source
  source y pixel
  @return source y pixel information