Re: extracting elements

[Mike Miller]

On Sat, 30 Apr 2005, Mike Miller wrote:

> ...I can get what I want by doing this:
>
> for i=1:length(I), Y(i,:)=X(I(i),J(i,:)); end
>
> Y =
>
>   1   3
>   6   8
>  17  20
>  14  15
>
> But I think there must be a way to do this sort of thing without a for 
> loop. Any suggestions?  Thanks in advance.


I think I've got it:

X(I*ones(1,size(J,2))+size(X,1)*(J-1))

Mike



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