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From: | Julius Smith |
Subject: | Re: no way for simple matrix lookup ? |
Date: | Fri, 18 Jun 2004 13:46:51 -0700 |
Right --- what price simplicity?Of course, the parser could also evaluate arguments of diag() with some optimization.
-- jos At 11:42 AM 6/18/2004, Mike Miller wrote:
On Fri, 18 Jun 2004, Julius Smith wrote:Oops - I meant diag(A(b',c)) of course -- josI think the problem with that solution is that if b and c have length, say, 10,000, you have to produce a matrix A with 100,000,000 elements, then use diag() to discard 99,990,000 of them because they were not needed.Mike -- Michael B. Miller, Ph.D. Assistant Professor Division of Epidemiology and Institute of Human Genetics University of Minnesota http://taxa.epi.umn.edu/~mbmiller/
_____________________________ Julius O. Smith III <address@hidden> Assoc. Prof. of Music and (by courtesy) Electrical Engineering CCRMA, Stanford University http://www-ccrma.stanford.edu/~jos/ ------------------------------------------------------------- Octave is freely available under the terms of the GNU GPL. Octave's home on the web: http://www.octave.org How to fund new projects: http://www.octave.org/funding.html Subscription information: http://www.octave.org/archive.html -------------------------------------------------------------
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