From help-octave-request at bevo dot che dot wisc dot edu Thu Jan 23 13:48:47 2003 Subject: Re: A Simple Matrix Construction Question From: Carlo de Falco To: Cc: "Octave" Date: Thu, 23 Jan 2003 20:46:34 +0100 Giovedì, 23 Gen 2003, alle 20:34 Europe/Rome, David Pruitt ha scritto: > This is known as "Tony's trick" from the Matlab support website. My > question is: why does this work? > M = Y(ones(5,1),:) means: M = [ Y(1,1:5) Y(1,1:5) Y(1,1:5) Y(1,1:5) Y(1,1:5) ]; in other words, replicate Y five times with first index always 1 and second index spanning 1:5 neat! c. Thanks, for teaching me the trick, Iago. ------------------------------------------------------------------------ -- Carlo de Falco Dipartimento di Matematica "F. Brioschi" Politecnico di Milano Piazza Leonardo da Vinci, 32 20133 Milano, Italy tel: +39-02-23994604 fax: +39-02-23994588 mailto:carlo at mate dot polimi dot it Have a look at: http://mox.polimi.it ------------------------------------------------------------------------ -- ------------------------------------------------------------- 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 -------------------------------------------------------------