How can I overlay more than the 32 maximum categories on ordinations?
A. You can do this in two ways in PC-ORD version 4.21 and later: 1) In the graph Options | Preferences dialog, select Labels From Group Number. The numbers of your categorical (C) variable then will then label the points. There will not, however, be a legend, but you can create one easily with your word processor by superimposing a text box containing a legend of your own design. 2) You can change the row names in your second matrix to reflect a group’s categories and then select from Options | Preferences | Labels From Second Matrix. See Categories with text labels.
