Re: A Simple Matrix Construction Question

[Carlo de Falco]

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.


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Carlo de Falco                                  
Dipartimento di Matematica "F. Brioschi"
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