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From: Matt Fig on 5 Aug 2010 09:54
"Anthony Hopf" <anthony.hopf(a)gmail.com> wrote in message <i3ecl3$hu6$1(a)fred.mathworks.com>...
> "Matt Fig" <spamanon(a)yahoo.com> wrote in message <i3d9dp$j6h$1(a)fred.mathworks.com>...
> > Do you need the find here at all? Why not just use logical indexing?
> >
> > A(A>0) = 45
>
> Matt, this is essentially what "find" does right?



No.

IDX = A>0;

creates a logical array and is much faster than doing:

IDX = find(A>0);

If all you need at the end is a logical array, it would be faster and easier to read if you work directly with the component logical arrays all the way through.
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