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From: mat001 on 19 May 2010 05:23
I defined
% pick.m
function [A,B,C] = pick(x,y,z)
A = x+y;
B = y;
C = x;

% end of function

In another .m file if i need only A or B then how to call. I do not want to use gloabl.
From: David Young on 19 May 2010 05:52
The simplest thing is just to call it like this

[A,B,C] = pick(x,y,z)

and then don't use A or B or C if you don't need them. Presumably you want to do something more than this, but I'm not exactly sure what.

In recent versions of Matlab you can write, for example

[~,B,~] = pick(x,y,z)

if you only want B.

In all versions you can write

A = pick(x,y,z)

if you only want A.

If you want to select the output using a number to choose one of the three, you might do this:

results = cell(1,3);
[results{:}] = pick(x,y,z);
result = results{k}

where the value of k determines whether you get A, B or C.

If you are happy to change the function pick, then you could pass an extra argument to it, to specify which result it should return, as in

function a = pick(x,y,z, k)
switch k
case 1
a = x+y; % or whatever
case 2
a = y+z; % or whatever
case 3
a = z;
otherwise
error('k out of range');
end
end

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