iterating a vector with a loop?

 Basically, we want to append three values (HF , calc_length and handle ) as the next row of Data during each iteration (i.e. during each call to this function). Each of the three values should be added as a new row to Data. Take the Data that existed from the previous iteration, and adds the HF , calc_length  and handle from this iteration to it. This will create a timeline of horizontal forces and lengths. We'll use this later to plot how we approached the optimal answer.

After i iterations, Data should have this structure:

    Data = [ HF1  calc_length1  handle1; 
             HF2  calc_length2  handle2;
             HF3  calc_length3  handle3;
                ... ...
             HFi  calc_lengthi  handlei]
this is basically just part of a much larger function, with input HF. Im guessing i have to use a loop to satisfy the given instructions. I am not sure whether to use or for or a while loop but i need the iterations to go on until HF has reached a desired value( causing L, a given, to equal calc_length). I have been reading for hours and i still can't imagine how to put this together. any help is appreciated.

Answer 1

[Andrei Bobrov]

Data = [];
while 1
    % here use your function for evalution HF, calc_length and handle
    % ...
    Data = [Data;HF, calc_length, handle];
    if L == calc_length, break; end
end