Date: Wed, 17 Aug 2011 10:35:50 -0700
Reply-To: Charles Axibund <caxilbund@IASINFO.COM>
Sender: "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From: Charles Axibund <caxilbund@IASINFO.COM>
Subject: Re: Syntax for rotating canonical coefficients
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Actually, I want to rotate the coefficients not the actual canonical
variates in order to get interpretable dimensions upon which to plot the
original categorical variables.
The outstat data set has a number of structures including correlations within
categories of the class variable and the canonical structure itself. It is the
coefficients in the canonical structure I want to rotate.
On Wednesday, August 17, 2011 at 12:14:13 AM Mark Miller wrote:
> My reading of the manual suggests that you may
> be attempting to work with the wrong output file
> or at least not the easiest to process.
> The OUT= file has original variables and the
> Canonical Variable Scores as Can1 Can2 ... up to NCAN variables.
> These are centered with mean zero & pooled within variance = 1
> These could be input to FACTOR as variables and rotated any which way.
> The OUTSTAT= file is really a heterogenous collection of structures
> To get at a particular structure you need to
> select based on _TYPE_ & _NAME_
> I expect that a correlation matrix produced from
> the NCAN vars in the OUT file would be the same as
> the rows of the OUTSTAT file selected where _TYPE_='PCORR'
> ... Mark Miller
> On 8/16/2011 6:05 PM, Charles Axibund wrote:
> > According to the SAS manual under the Candisc procedure you can use Proc
> > Factor to rotate the output canonical coefficients. To quote the manual,
> > "The canonical coefficients output data set can be rotated by the FACTOR
> > procedure." So, I run my candisc procedure and output an outstat data
> > set. I input this to the factor procedure and get an errr message
> > telling me that the corr matrix read from the input data set is not
> > symmetrical. I've tried method=score, method=prin, no method at all, and
> > get the same error.
> > Clearly there is some secret syntax to get the rotation to happen. I
> > can't find it in the manual anywhere. It obviously works, since it is
> > referenced in the manual. I also did it successfully several years ago,
> > but have absolutely no memory of the syntax other than that it was not
> > obvious.
> > Can any one enlighten me as to how to get SAS to rotate canonical
> > coefficients?
> > Thanks.
> > Charlie Axilbund
> > firstname.lastname@example.org