Stop the iteration when a button got pressed in MATLAB App Designer

Question

T.Mariah Khayat 2019-11-7

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/489832-stop-the-iteration-when-a-button-got-pressed-in-matlab-app-designer

回答： Sourabh Kondapaka 2020-9-4

I'm currently developing an App which computes the roots for a given function, there is a solve button which computes the solution to the function, the output of each iteration will be presented in a table.

Now, I want to add a stop button which will stop the iteration whenever the stop button is preseed.

How can I call the stop button inside the start button to stop the iteration?

And what I have to add inside the stop function to make it work?

Here's the start button:

     fun = app.EditField.Value;
            a = app.EditField_2.Value;
            b = app.EditField_3.Value;
            error = 1.0*10.^-5;
            
            syms x;
            func = matlabFunction(str2sym(fun));
            devfunc = matlabFunction(diff(func(x)));
            
            if (app.EditField.Value == " " && app.EditField_2.Value == " " && app.EditField_3.Value == " " && app.EditField_4.Value == " ")
              %Error Alert
            else 
                fu = 1.0*10.^-5;
                
                num = 0;
                while ( abs(fu) >= error || num < 10)
                      num = num + 1;
              c = (a+b)/2;
              cr = c - func(c)/devfunc(c);
              if a < cr
                  xi = cr;
              else
                  xi = c;
              end
                fu = func(xi);
                
               if func(a)*fu < 0
                  b = xi;
                
                    vars = {num2str(num), num2str(xi),num2str(func(xi))};
                    app.UITable.Data = [app.UITable.Data; vars];
              
              else 
                  a = xi;
                 
                  vars = {num2str(num), num2str(xi),num2str(func(xi))};
                   app.UITable.Data = [app.UITable.Data; vars];  
                
               end       
                end
            end 
     
              app.Root.Text = num2str(xi);