Are the axes located in the same app?
Is this a callback funtion in the app, a private function, etc? In either scenario, the first input to your function is automatically app. You just need to know the name of the axes, which can be obtained from the Component Browser (top right).
You specify the axes as part of the plot command. Use the syntax plot(ax,___). It might look something like this.
methods (Access = private)
function myFcn(app)
x=0:0.1:4*pi;
y=sin(x);
plot(app.UIAxes2,x,y)
end
end
