PLS of block 1 (facial block orientation) and 2 (facial shape) in modern humans.

<p>Wireframes show the shape changes along each singular axis. For legend see <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0057026#pone-0057026-g004" target="_blank">figure 4</a>.</p>