matrix if statement is above .5 then can I re enter it to show .5

I have a large matrix(x) and I want to change any value the is above .5 or below -.5 to .5 or -.5 respectively in a certain column(2). any assistance regarding this topic would be greatly appreciated.

regards, cormac

Answer 1

[Guillaume]

I'm sure it's covered in the Getting Started tutorials. It's basic matrix indexing.

A = rand(10, 10)*2-1; %create matrix between -1 to 1, for demo

A(A < -0.5) = -0.5;
A(A > 0.5) = 0.5

Answer 2

[Thorsten]

R = randn(10)/3;
R(R > 0.5) = 0.5;
R(R < -0.5) = -0.5;