how to return only true statements

for example, if I have:

>> e=[1 -7 -1.2 6 -9 19 1.8]

and I want matlab to give me only the true statements for e>0

as in:

e=[1 6 19 1.8]

I tried

>> if e>0 e end

but doesn't do anything.

thanks

[Azzi Abdelmalek]

I think you should read the basics of programming. (not necessary Matlab)

if e>0
e
end

What are you expecting when you write

e

Answer 1

[Image Analyst]

You mean like this

out = e(e>0)

Answer 2

[Wayne King]

Just do

e>0

You get the following

1 0 0 1 0 1 1

If you want to return the elements

   X = e(e>0);