On Sun, Oct 16, 2011 at 4:48 PM, Michael Creel <michael.cr...@uab.es> wrote: > > > On Sun, Oct 16, 2011 at 11:13 AM, Juan Pablo Carbajal <carba...@ifi.uzh.ch> > wrote: >> >> Hi, >> I have posted a function that implements the two possible inverses of >> vech. Does it already exist? I know there is a function that produces >> a matrix that when multiplied by the output of vech returns a >> symmetric matrix (can't remember the name). I think this version is >> less memory/time consuming. >> >> >> https://sourceforge.net/tracker/?func=detail&aid=3424324&group_id=2888&atid=352888 >> >> Thanks for your feedback >> >> -- >> M. Sc. Juan Pablo Carbajal >> ----- >> PhD Student >> University of Zürich >> http://ailab.ifi.uzh.ch/carbajal/ >> >> >> ------------------------------------------------------------------------------ >> All the data continuously generated in your IT infrastructure contains a >> definitive record of customers, application performance, security >> threats, fraudulent activity and more. Splunk takes this data and makes >> sense of it. Business sense. IT sense. Common sense. >> http://p.sf.net/sfu/splunk-d2d-oct >> _______________________________________________ >> Octave-dev mailing list >> Octave-dev@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/octave-dev > > I have a function that generates a symmetric matrix from a vector, at > http://pareto.uab.es/mcreel/Econometrics/MyOctaveFiles/Utilities/unvech.m > in case you're interested in looking at it. > Cheers, > M. >
Hi Michael, Thanks, It is essentially the same function but mine avoids the for loops and gives the option to create an anti-symmetric matrix, since the inverse vech is not uniquely defined. -- M. Sc. Juan Pablo Carbajal ----- PhD Student University of Zürich http://ailab.ifi.uzh.ch/carbajal/ ------------------------------------------------------------------------------ All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity and more. Splunk takes this data and makes sense of it. Business sense. IT sense. Common sense. http://p.sf.net/sfu/splunk-d2d-oct _______________________________________________ Octave-dev mailing list Octave-dev@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/octave-dev
