Specifying the number of canonical variates in a MANOVA

[xtc283x]

Not having used the MANOVA/canonical option available from Proc GLM in some time, I'm surprised that my version of SAS only returns a single canonical variate regardless of the number of dependent variables are in the model statement.

Nothing in the documentation suggests that there is an option for requesting or specifying the number of canonical variates.

Is anyone aware of a workaround to this? In other words, how do you get Proc GLM/MANOVA to return more than one canonical variate?

Thank you.

[PaigeMiller]

This example has 5 Y variables, and 5 canonical variables.

https://documentation.sas.com/?cdcId=pgmsascdc&cdcVersion=9.4_3.4&docsetId=statug&docsetTarget=statu...

Maybe there's something in your data that limits the results to 1 canonical variable.

[xtc283x]

Thanks for your response. However, I don't see five variates, I see one which comprises 100% of the variance. If the example used the OUTSTAT= option, you would see what this means.

[PaigeMiller]

I see five canonical variables (two of which account for 0% of the variability).

[PaigeMiller]

Adding:

Perhaps this is what you are seeing:

but you have to read what it says. In the comparison of Llanederyn versus other sites, there is effectively only one real canonical vector, in other words comparing Llanederyn to other sites the variation of Y lies effectively in a single dimension.