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Topic: Insert values into a matrix
Replies: 2   Last Post: Jul 15, 2013 8:04 PM

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Loren Shure

Posts: 1,038
Registered: 12/7/04
Re: Insert values into a matrix
Posted: Jul 15, 2013 7:40 PM
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"Max " <mshestov@gmail.com> wrote in message
> Hi guys, I'm having a bit of a brain fart here.
> Say you have a matrix A = [1,2,3,4,5]
> and a logical vector B = [1,0,0,1,1,1,0,1]
> Where I want to stretch A to the Length of B by inserting 0's where 0's
> locations appear in B.
> Basically, how can I turn matrix A into this [1,0,0,2,3,4,0,5] using B
> Appreciate the help guys.
> -Max

Try this:

A = [1,2,3,4,5]
B = [1,0,0,1,1,1,0,1]
B = logical(B);
C(B) = A
C =
1 0 0 2 3 4 0 5



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