Retun matrix from a function

I want to write a program which will return a matrix as output. there will be two inputs to the function. Inside the function a matrix 'v' is created (3*3) as shown in the below program. I need to extract the columns of matrix 'v' which contains non-negative numbers. for that I have used 'any' function and the required matrix 'u' is obtained. But the problem is Its giving error when this is executed. But when its run in command window I am able to see the matrix.... Is it possible to get the output using "varargou" in the function?

Pls help me.

The program used in matlab function block is given below.

function u = switching(g,h)
v=[0 0-g 0-g-h;1 1-g 1-g-h;2 2-g 2-g-h]';
t= any((v)<0);
u=v(:,~t);
end

[Simon]

Hi!

What is the error message?

Do you want columns with only positive numbers or with at least one positive number?

[Pinkymol]

Hi, The error is "MATLAB Function Interface Error: Data 'u' (#101) is inferred as a variable size matrix, while its specified type is something else." I want the columns with only positive numbers

[Walter Roberson]

If you want columns with only positive numbers, then what is the point of including the row

0 0-g 0-g-h

that is then transformed into a column? The 0 is never going to be positive.

Is there anything known about the range of g and h? It appears they can be negative, but can they ever be 0 or positive?

Answer 1

[Walter Roberson]

varargout will not help for this situation.

At the beginning of the function, give

u = zeros(3, 3);

You are then allowed to give it a different (smaller) shape later.

[Pinkymol]

Still its not working