How can i save the variabels values as array form in for loop?

How can i save the variabels values as array form in for loop?

I want to save 'Q' as array or matrix form

loop = 1;

i = 0;

for N = 0:150

i=i+0.05;

....

....

Q = N_cells*i*(E_nernst - V_out);

%'N_cells' is constant.

%E_nernst & V_out are function of 'i'

[Rik]

Something like Q(N+1)= instead of Q=?

Answer 1

[TADA]

You can define Q as a column/row vector. Its size can be set to the number of iterations you perform:

loop = 1;
i = 0;
maxN = 150;
N_cells = 10; % or the real constant value...

% This will preallocate the results as a column vector
% This bit is important for performance
% note that we add 1 to maxN because matlab has no index 0
Q = zeros(maxN+1, 1); 

for N = 0:maxN
    % if i isn't further changed in the loop body, you can also make i a
    % function of N instead of defining it outside the loop as 0.
    % something like: i = (N + 1) * 0.05;
    % it won't improve performance nor save memory, its just more consice,
    % and you don't need to move around the code to determine its value.
    i=i+0.05;
    
    %
    % Real implementation goes here
    %
    E_nernst = sin(i);
    V_out = exp(i);
    
    % again, adding 1 to the current N, because indexing the zeroth
    % position results in an error.
    Q(N+1) =  N_cells*i*(E_nernst - V_out);  
end