How can I replace integer values in a array?

I Have some values in a array like this.

A = -4

-4

-4

4

4

4

I want to convert all negative values to 0 and all positive values to 1.

How can I do that.??

Outcome should be :

B = 0

0

0

1

1

1

Answer 1

[Matt J]

B=(sign(A)+1)/2

[William]

... but be aware that sign(0)=0, so B becomes 0.5 in this case.

Answer 2

[Image Analyst]

We already answered this in your other question:

https://www.mathworks.com/matlabcentral/answers/707043-binary-value-conversion#comment_1241803

B = double(A > 0)