MATLAB Central Newsreader - removing zero elements

removing zero elements

M K — Fri, 16 Oct 2009 11:23:04 -0400

I have pair of arrays

x=[1,2,3,0,5,6,0];
y=[3,0,5,6,7,0,9];

(these are simplified examples)

I would like to remove corresponding elements from both arrays if either of them have a zero in it.

so in the above example, I am looking to have an answer of

x=[1,3,5];
y=[3,4,7];

How would I go about doing this?

any help would be most useful.

removing zero elements

Mirek L — Fri, 16 Oct 2009 11:48:02 -0400

"M K" <maha_k@mathworks.com> wrote in message <hb9l2n$a6s$1@fred.mathworks.com>...
> I have pair of arrays
>
> x=[1,2,3,0,5,6,0];
> y=[3,0,5,6,7,0,9];
>
> (these are simplified examples)
>
> I would like to remove corresponding elements from both arrays if either of them have a zero in it.
>
> so in the above example, I am looking to have an answer of
>
> x=[1,3,5];
> y=[3,4,7];
>
> How would I go about doing this?
>
> any help would be most useful.
>
>

x1 = x(x.*y ~= 0)
y1 = y(x.*y ~= 0)

Re: removing zero elements

Loren Shure — Fri, 16 Oct 2009 12:10:21 -0400

In article <hb9l2n$a6s$1@fred.mathworks.com>, maha_k@mathworks.com
says...
> I have pair of arrays
>
> x=[1,2,3,0,5,6,0];
> y=[3,0,5,6,7,0,9];
>
> (these are simplified examples)
>
> I would like to remove corresponding elements from both arrays if either of them have a zero in it.
>
> so in the above example, I am looking to have an answer of
>
> x=[1,3,5];
> y=[3,4,7];
>
> How would I go about doing this?
>
> any help would be most useful.
>
>
>

anyzero = any([x;y] ==0)
x(anyzero) = []
y(anyzero) = []

I think you have a typo in expected results.

>> x=[1,2,3,0,5,6,0];
>> y=[3,0,5,6,7,0,9];
>> anyzero = any([x;y] ==0)
anyzero =
     0 1 0 1 0 1 1
>> x(anyzero) = []
x =
     1 3 5
>> y(anyzero) = []
y =
     3 5 7

--
Loren
http://blogs.mathworks.com/loren