Is there a built-in function that extracts values unequal to zero in MATLAB?

Question

I was wondering if there is a function like the one (smaller) below, but instead extracts values that are unequal to zero?

a = [67 0 8 25 0 20 0 90 7 2 9];

smaller10 = a(a < 10)

smaller10 =

 0     8     0     0     7     2     9

What's the programming language? Looks like matlab or octave. I can answer your question if it is one of those, but you have to provide that information. — timgeb, Feb 09 '16 at 20:09
All you wanted to know about indexing in Matlab: http://stackoverflow.com/questions/32379805/linear-indexing-logical-indexing-and-all-that — Marc, Feb 09 '16 at 20:48

timgeb · Answer 1 · 2016-02-09T20:57:06.993

3

Either use

a(a~=0)

or

nonzeros(a).'

You can find the documentation for nonzeros here.

edited Feb 09 '16 at 20:57

answered Feb 09 '16 at 20:41

timgeb

1

I'd use `.'` instead of `'` in case values are complex. And Matlab requires `~` instead of `!` – Luis Mendo Feb 09 '16 at 20:48
1

I'd rather use `a(logical(a))` - should be faster. – Robert Seifert Feb 09 '16 at 21:15

1 Answers1