MATLAB: Handles for string concatenate in GUIDE

guidehandlesstring concatenate

Hi, I am writing a function to set the string in listbox to concatenate strings vertically. It works well somehow. The problems is that the data cannot be import to workspace and show variables results at command window. The error occur when there is no ';' after each calculation code and the warning message show the error is cause by the code of this function.
function display(handles,string_text)
      if isnumeric (string_text)
          string_text = num2str(string_text);
      end
      ori_string=get(handles.lstLog,'String');
      string_text=sprintf('%s',string_text);
      set(handles.lstLog,'string',strvcat(ori_string,string_text));
      drawnow;
Warning message: ??? Input argument "string_text" is undefined.

Best Answer

I do not understand the question.
  • Your function sets the string to concatenate strings? What does this mean?
  • How do you try to import data to which workspace?
  • Which error occur? You've only posted a warning.
But I can guess, what might causing serious troubls:
display is an important built-in function. Shadowing it by a user-defined function is a bad idea. The function display() is called, when a code line is not terminated by a semicolon. So try to use a different name for your function.
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