Plot or mark a single point in App Designer

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Ermanno Manca 2020-7-10

编辑： Ermanno Manca 2020-7-11

Hey, i know how to plot lines and functions etc. and am struggling on a real simple step.

I'd like to mark or plot a single point like "y=0 x =100" in a certain color.

It would be even great to write a short Text over or under this point like (X_CP).

Hope someone can solve this Problem.

Have a nice day and best regards,

Ermanno

Cris LaPierre 2020-7-10

You have to add a second plot to your figure using hold on, and plot just the single point with your desired color and line style.

Using the x,y coordinates of that point, you can use the text function to add a custom label for that point to your figure.

Cris LaPierre 2020-7-10

Perhaps a simple example adapted from here.

x = 0:pi/100:2*pi;
y = sin(x);
plot(x,y)
hold on
plot(1.5,0,'rs')
hold off
text(1.5,0.1,"x_CG","Interpreter", "none")

Ermanno Manca 2020-7-11

编辑：Ermanno Manca 2020-7-11

Thanks a lot. It really helped me out!

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