How to save multiple output?

a =randperm(18);

b=reshape(a,9,2);

vals=b;

[m,n] =size(vals) ;

for i = 1:m

[A,x,y]=myfunction(I,vals(i,1), vals(i,2));

end

[A,x,y] is the output of myfunction.

How to save A, x and y where A is a square matrix, x and y both are single vaues.

Answer 1

[Mathieu NOE]

hello

I would recommend to use structures (indexed) like in this example

a =randperm(18);
b=reshape(a,9,2);
vals=b;
 [m,n]  =size(vals) ;
 
 I = rand(3,5);
 
for i = 1:m
    [A,x,y]=myfunction(I,vals(i,1), vals(i,2));
    output{i}.A = A;
    output{i}.x = x;
    output{i}.y = y;
end

% [A,x,y] is the output of myfunction.
% How to save A, x and y where A is a square matrix, x and y both are single vaues.
 
%%%%%%%%%%%%%%%%%%
function [A,x,y] = myfunction(I,a,b)
    A = I ;
    x = a;
    y = b;
end

so , for example , to access the data from the first iteration :

output{1}

ans =

struct with fields:

A: [3×5 double]

x: 14

y: 7

>> output{1}.A

ans =

0.6948 0.0344 0.7655 0.4898 0.7094

0.3171 0.4387 0.7952 0.4456 0.7547

0.9502 0.3816 0.1869 0.6463 0.2760

>> output{1}.x

ans = 14

[Ammy]

Thank you very much @Mathieu NOE

[Mathieu NOE]

My pleasure

I have to say that there is a better coding : rather than nesting lots of scalar structures inside a cell array, it would be simpler to just use one structure array

a =randperm(18);
b=reshape(a,9,2);
vals=b;
[m,n]  =size(vals) ;
 
I = rand(3,5);
output = struct([]); % ensure that "output" is a structure

for ii = 1:m
    [A,x,y]=myfunction(I,vals(ii,1), vals(ii,2));
    [output(ii).A, output(ii).x, output(ii).y] = myfunction(I, vals(ii,1), vals(ii,2));
end
 
%%%%%%%%%%%%%%%%%%
function [A,x,y] = myfunction(I,a,b)
% [A,x,y] is the output of myfunction.

    A = I ;
    x = a;
    y = b;
end

[Ammy]

well said, thank you very much.

Answer 2

[Steven Lord]

In your code:

%{
for i = 1:m
[A,x,y]=myfunction(I,vals(i,1), vals(i,2));
end
%}

is A always going to be the same size? If so consider making a 3-dimensional array:

A = magic(3);
B = zeros([size(A), 5]);
for k = 1:5
    B(:, :, k) = A.^k;
end
B(:, :, 3) % The cube of each element in A

ans = 3×3

512 1 216 27 125 343 64 729 8

Similarly for your scalar x and y values, store them in a vector or a 3-dimensional equivalent.