I would like to know how I could use the the values for one function to another.

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Harjinder Singh Pabla 2015-8-15

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评论： Harjinder Singh Pabla 2015-8-15

I would like to know how I could use the the values for num, den and sys I have in function untitled_OpeningFcn and use them on the pushbutton1_Callback function for the graphs and setting of the values of the text boxes.

             function untitled_OpeningFcn(hObject, eventdata, handles, varargin)
             handles.output = hObject;
             guidata(hObject, handles);
             if strcmp(get(hObject,'Visible'),'off')
             t = 0:0.25:7;
             y = sin(t);
             plot(t,y)
             end
             num = input('Enter coefficients of numerator: ');
             den= input('Enter coefficients of denominator: ');
             sys = tf([num],[den]);
             display('Your transfer function is: '); sys
            function pushbutton1_Callback(hObject, eventdata, handles)
              if true
              end
              axes(handles.axes1);
              cla;
              set(handles.numtxt, 'String', num2str(num));
              set(handles.dentxt, 'String', num2str(den));
              popup_sel_index = get(handles.popupmenu1, 'Value');
              switch popup_sel_index
                case 1
                pzmap(sys);
                case 2        
                rlocus(sys);
                case 3        
                nyquist(sys);
                case 4
                bode(sys);
                end

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Answer 1

Walter Roberson 2015-8-15

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https://ww2.mathworks.cn/matlabcentral/answers/233956-i-would-like-to-know-how-i-could-use-the-the-values-for-one-function-to-another#answer_189400

http://matlab.wikia.com/wiki/FAQ#How_can_I_share_data_between_callback_functions_in_my_GUI.3F

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Harjinder Singh Pabla 2015-8-15

在 MATLAB Online 中打开

I added global num den inside the first function and then I added handles.num and den.

    num = input('Enter coefficients of numerator: ');
    den = input('Enter coefficients of denominator: ');
    sys = tf([num],[den]);
    display('Your transfer function is: '); sys
    handles.num = num;
    handles.den = den;
      num = handles.num;
      den = handles.den; 
      sys = tf(num,den);
      g = ilaplace(1/s^3);
      set(handles.text9, 'String', char(g));
      set(handles.numtxt, 'String', num2str(num));
      set(handles.dentxt, 'String', num2str(den));