Notice: On April 23, 2014, Statalist moved from an email list to a forum, based at statalist.org.
From | Michael Betz <betz.40@buckeyemail.osu.edu> |
To | "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu> |
Subject | RE: st: Keeping values in upper triangle of matrix |
Date | Wed, 7 Dec 2011 03:36:13 +0000 |
Awesome Brendan, that's the command I needed! I'm having a problem now with the next step, getting the column vector into Stata. When I use -st_matrix- Stata freezes up. I'm trying to put a 4729350x1 column vector, so I don't know if I'm running into a size problem. I'm using Stata 11 SE. My revised code is below. foreach x of varlist amenityscale-wages{ use "Merged1993", clear mkmat `x' mata: a=st_matrix("`x'") mata: b=J(3075,3075,1) mata: c=b:*a mata: d=c:-a' mata: e=vech(d) mata: st_matrix("`x'", e) //This is the step where Stata freezes up svmat `x' keep `x' if `j'>0 merge 1:1 _n using "Finalmat93_00", nogen save "Finalmat93_00", replace local j=`j'+1 } -----Original Message----- From: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Brendan Halpin Sent: Tuesday, December 06, 2011 5:36 PM To: statalist@hsphsun2.harvard.edu Subject: Re: st: Keeping values in upper triangle of matrix On Tue, Dec 06 2011, Michael Betz wrote: > I wondered if there was a way to > save all the elements of the upper triangle of the matrix as a column > vector. Check out the vech() function in Mata. 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/ * * 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/