How can I plot more than 1 signal in the same axes within the GUI figure?

I have created a GUI which includes options to select the signals to be represented and a single axes window. I would like to represent all the selected signals in the axes at the same time. How can I do that? Any advice would be helpful. Thank you!

Answer 1

[MathReallyWorks]

Hello Eva,

Use "hold on" in your code to plot multiple signals on same axis.

For example, see this:

 clear; 
clc;
t = -pi : 0.1 : pi;
x = sin(t);
y = cos(t);
plot(t,x,'color','r'); 
hold on;
plot(t,y,'color','b');

[Eva]

Thank you, I've already tried that but it doesn't work. Any suggestion about what could be the problem?

[Stephen23]

@Eva Gil: well, we don't know what you tried, nor what "but it doesn't work" actually means: did it plot incorrect data, did you get a warning, did MATLAB stop responding, did you get an error message, or perhaps your PC caught fire? Should I call the fire brigade?

Or, if " but it doesn't work" is something less life-threatening, perhaps you could tell us exactly what you tried, what you expected, and what happened (including the complete error message text, should you get any).

[Eva]

Sorry Stephen. You're right. The command 'hold on' works. The problem was that I didn't specify the axes where it had to be represented. An example about how the code should be written:

x=1:100;
y=2*x;
y2=x.^2;
axes(handles.axes1);
plot(x,y);
hold on;
plot(x,y2);

Next time I'll explain myself far better. Thank you for your time and advices (I'm a newbie)

[Image Analyst]

You said you had "a single axes window" so you have only one axes. The plots should have been there and the call to axes() should not have been needed.

[Eva]

It was what I thought, but it didn't work until I called axes().

[MathReallyWorks]

Hahaha Stephen, that was rude buddy. Anyways you said the truth.

Hello Eva, don't feel sorry if you are a newbie. We are here to correct you and support you.

Keep exploring!