Load (file.m) into button pushed function

I'm beginner in Matlab, I'm designing an app via 'App Designer'. I have a function called 'langmuir.m', I wanted this function to be performed inside button pushed function alongside other calculus. Please help me! My Langmuir.m function as follows:

     function output = Langmuir(a,y, x)
     n=a(1).*a(2).*y./(1.+(a(2).*y));
     output = sum((x-n).^2);
     end

And my code for the button pushed function in GUI is as follows:

          % Button pushed function: LangmuirButton
          function LangmuirButtonPushed(app, event)
          x=[1,2,3,4]
          y=[5,6,7,8]

          load('Langmuir.m')

          a = [4 0.7];
          SSE = Langmuir(a,y, x);
          fminsearch(@langmuir,a,[],x, y);
          fun=@(x)ans(1).*ans(2).*x./(1.+(ans(2).*x))

          fplot(app.UIAxes,fun,[0,130])
          hold
          plot(app.UIAxes,x,y,'ob')

It is not loading Langmuir.m and says 'Error using load Number of columns on line 2 of ASCII file Langmuir.m must be the same as previous lines.' What can I do?

Answer 1

[Greg]

You don't load .m-files. You call them (as you do in the other 2 lines that involve Langmuir - except make sure to capitalize the one in fminsearch).

Simply remove the line

load('Langmuir.m')