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| From | brendan.halpin@ul.ie (Brendan Halpin) |
| To | statalist@hsphsun2.harvard.edu |
| Subject | Re: st: re: matrix question |
| Date | Mon, 06 Feb 2012 09:54:14 +0000 |
On Mon, Feb 06 2012, Christopher Baum wrote: > <> > Duh! The transformation matrix can readily be computed as a Kronecker product: > > mata > bigmat = runiform(15,6) > eye = I(rows(bigmat) / 5) > bee = J(1, 5, 1/5) > transmat = eye # bee > reduced = transmat * bigmat > bigmat > reduced > end You're still ahead of me! Brendan -- Brendan Halpin, Department of Sociology, University of Limerick, Ireland Tel: w +353-61-213147 f +353-61-202569 h +353-61-338562; Room F1-009 x 3147 mailto:brendan.halpin@ul.ie ULSociology on Facebook: http://on.fb.me/fjIK9t http://teaching.sociology.ul.ie/bhalpin/wordpress twitter:@ULSociology * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/