Features that carry over to 3-d ordination

It is worth saying, as we start to explore the wide range of tools which can be applied to an MDS or other ordination that, although demonstrated for 2-d plots, most of the techniques are also available for 3-d configurations. This includes all joining operations, such as join pairs and the minimum spanning tree, trajectory and vector overlays, and the new sequence animations. Also bubble plots are extended to 3-d in PRIMER 7. In fact the only Special menu feature which is not so extended is the drawing of cluster contours, but plotting symbols for cluster groups can often be more effective.