Examples of reading hexagrams off Shao Yong's Xiantian diagram. The six levels are the six lines. Black is yin or a broken hexagram line, white is yang or a solid line. Hexagram numbers are in the King Wen order, but note that from far left to far right the hexagrams are 0–63 in binary order (i.e., 000000 [all yin] to 111111 [all yang]).
See my archive of Chinese diagrams for original Xiantian illustrations, in both rectangular and circular formats. More details on the Xiantian diagram in Yijing hexagram sequences.
Out of interest, here's how the Xiantian diagram looks inversed:
See also the diagram of the King Wen sequence made in the same way.