Deformed plots and extra windows plotting in matlab app.designer

I am the same person of the previous question. So I am trying to design an app which, when I click on the button, a circle is drawn in the pannel. This is the code I have written to let this happen:

And this is the result:

As you can see, the circunference is deformed. So, to avoid that, to have the pannel gridded and to hold on the graph for future simultaneous plots, I add axis equal, grid and hold on in the code (as I would do the same for the matlab command window) as you can see below:

When I run the app and click the button, appears the same deformed circle and an extra window (figure 1 ) with nothing on it as you can see:

How can I get rid of that annoying extra window (Figure 1) and how can I achieve axis equal, hold on and grid commands to be executed?

Thank you very much!

Answer 1

[Adam Danz]

You need to specify the axis handle.

https://www.mathworks.com/matlabcentral/answers/503412-how-to-create-gui-plot-using-the-uiaxes-plottype-and-runlist-box#answer_413544

[ErikJon Pérez Mardaras]

Thanks for your reply!

I have tried that, as you can see in the following code (I think I did it well) but still appears the extra window and the circle is not perfectly drawn

The result:

[Adam Danz]

All of the plotting commands need handle inputs including axis(), hold(), grid().

BTW, the images of your code are helpful to see what's going on but we cannot copy-paste the text in images. Sometimes it's helpful to copy-paste the text so we can show you examples without rewriting all of the code. For example, grid(app.panel, 'on') (assuming app.panel is the handle to the axes).

[ErikJon Pérez Mardaras]

I made this:

and this is the result:

It works perfectly. Thanks for your help! However, as long as I can see, the X and Y limits specification is not necessary. The difference that I can tell is that with X and Y limits, the plot is on scale, whthout them, the drawing just occupies all the window

[Adam Danz]

That's correct, they are not related to the data aspect ratio controlled by axis equal.