MATLAB: Making a matlab GUI. Display all values taken from an iterative loop on a static Text

iterative loopmatlab guistatic text

hello guys, Am making a matlab GUI and i want the results to appear in a vertical format on a static textbox. This is my code
k = 15;  
n = 1;
while k > n
  q = mood(k,2);
  if q == 0
      k = k / 2;
  else k = (k * 3) + 1;
  end
  for answer = k
      %This format should display on my textbox
      %disp(answer); %does not show on static textbox.
      set(handles.mytext, 'String', answer)
  end
end
I want the results to appear like this in a static textbox
k = 15 46 23 70 35 106 53 160 80 40 20 10 5 16 8 4 2 1 But the above code display only the last value. Thanks in advance

Best Answer

k = 15;  
n = 1;
i = 0;
allK = [];
while k > n
  if mod(k, 2) == 0  % Not "mood"!
    k = k / 2;
  else
    k = (k * 3) + 1;
  end
  i       = i + 1;
  allK(i) = k;     % A warning will appear in the editor
end 
set(handles.mytext, 'String', sprintf('%d\n', allK));
Now allK grows iteratively. This is very expensive if the resulting array is large, e.g. for 1e6 elements. For your problem, the delay is negligible. A pre-allocation is not trivial here, because you cannot know how many elements are created by this function. But it is better to pre-allocate with a poor too large estimation:
allK = zeros(1, 1e6);   % instead of: allK = [];
set(handles.mytext, 'String', sprintf('%d\n', allK(1:i)));
Alternatively you can assign a cell string to the 'String' property also instead of inserting line breaks:
set(handles.mytext, 'String', sprintfc('%d', allK(1:i)));
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