code: public static Long getZoomLevel(double[] widths, double[] heights,
  			List<TileMatrix> tileMatrices, double length) {
  		return getZoomLevel(widths, heights, tileMatrices, length, true);
  	}
docs: Get the zoom level for the provided width and height in the default units
  
  @param widths
  sorted widths
  @param heights
  sorted heights
  @param tileMatrices
  tile matrices
  @param length
  in default units
  @return tile matrix zoom level