Can somebody help with optimal scaling?
draco...@magic.ms
can anybody give me some advice on optimal scaling in SPSS?
Specifically, on the non-linear principal component analysis and the
generalised canonical correlation analysis (overals).
I find the optimal scaling procedures extremely useful. My problem
ist
that I really need to rotate the axis in order to understand and
interpret the results. I know that a different kind of inteprretation
is suggested, but I am not the visual type and I have problems
interpretating unrotated dimensions. If I do employ subsequent
varimax
rotation, I get great results with a very clear structure.
So far so good. The problem is, however, that the optimal scaling
module in SPSS does not offer an intergrated rotation procedure so
that right now I have to compute the varimax rotation by manually
inserting the values in the matrix. The disadvantage is that I can
never save the individual scores of my participants on the rotated
dimensions. But that is what I want because I want to employ rotated
scores for further validity analysis.
Does anybody know a syntax in SPSS which makes it possible to
directly
rotate and then also to get the individual scores on the rotated
dimensions? It is very easy to save the scores on the unrotated
dimensions, but I need the rotated ones....
I really would appreciate any advice, thank´s a lot!
Peter