extracting positive numbers?

I have a vector, X [197 1] which has values of 0 or positive numbers. I'd like to identify those indexes with only positive numbers as well as only use those values later in an algorithm? How best can I do this? Thank you.

Answer 1

[dpb]

x=x(x>0);

Look for "logical addressing" in documentation...

[Stephen23]

"logical indexing" would be a more useful term to search for:

http://blogs.mathworks.com/steve/2008/01/28/logical-indexing/

http://blogs.mathworks.com/loren/2013/02/20/logical-indexing-multiple-conditions/

http://www.mathworks.com/help/matlab/math/matrix-indexing.html#bq7egb6-1