Is it possible to save an output of a function and pass it as an input to another function after some time steps?

So, I have three functions that I call every time step: for ii = 2:50 [G_dmg,Output2,output3] = Stages(G_dmg, Input2, Input3);

    [G_dmg, output2] = decision(G_dmg);
    % G_dmg is an object of three fields, Only the field "G_dmg.Nodes.Load"
    % is changing and I want to store this field ( or the whole object) in each iteration.

    if ~mod(ii,4) % if this condition is satisfied ( that is when ii=4,8,12,...) I want to pass the field "G_dmg.Nodes.Load" 
        % saved at (ii = 2,3,4,... and not the ones saved at ii = 4,8,12,...) to function implement
       [G_dmg] = implement(G_dmg, Input2, Input3)
    end
end

To simplify my comments:

The condition will be satisfied first at ii = 4, at this iteration I want to pass G_dmg that was saved at ii = 2. And at ii = 8 I want to pass the one that was saved at ii = 3 and so on.

I would appreciate your ideas.

Answer 1

[Kishan Dhakan]

Try:

iter = 1
G_dmg_at_index_ii = []
for ii = 2:50
    [G_dmg,Output2,output3] = Stages(G_dmg, Input2, Input3);
    [G_dmg, output2] = decision(G_dmg);
    
    G_dmg_at_index_ii(end+1) = G_dmg;
    % G_dmg is an object of three fields, Only the field "G_dmg.Nodes.Load"
    % is changing and I want to store this field ( or the whole object) in each iteration.
    
    if ~mod(ii,4) % if this condition is satisfied ( that is when ii=4,8,12,...) I want to pass the field "G_dmg.Nodes.Load" 
        % saved at (ii = 2,3,4,... and not the ones saved at ii = 4,8,12,...) to function implement
       [G_dmg] = implement(G_dmg_at_index[iter], Input2, Input3)
       iter = iter+1;
    end
end

Note: There will be a warning saying 'preallocate G_dmg_at_index_ii for performance', which can either be ignored or resolved by calculating the required size and initialising with dummy G_dmg objects.

[Waseem AL Aqqad]

Thanks, Kishan