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