How to Stop Matlab from Opening a New Figure in GUI?

[Jopi]

Hello all,
I've programmed a GUI to read and plot data from oscilloscope. I have a timer function that updates the graph at 1 Hz frequency.
What I want to is to add two vertical lines to the same figure that mark the beginning and end times of CCE measurement. For that purpose, I'm using the vline -function from Mathworks file central. The code that I've tried to plot those lines with looks like this:

if(isappdata(0,'ccestart') && isappdata(0,'cceend'))
    axes(maingui.mainscreen)
    vline(getappdata(0,'ccestart'),'--k','CCE Start');vline(getappdata(0,'cceend'),'--k','CCE End');
end

Basically it just checks that if there exists values for CCE Start and CCE End, which it then uses as the x coordinates.
The problem is that for about the first five executions of the timer function, it does plot them in the correct figure. But after that, Matlab decides to open a new figure for me. I get no error message, or any reason for that. This is very annoying, and I'd love to know how to fix this bug. Or if it is fixable at all.

 

[NateD]

Any help would be greatly appreciated. Thank you!</code>The code that I've tried to plot those lines with looks like this:<code>if(isappdata(0,'ccestart') &amp;&amp; isappdata(0,'cceend')) axes(maingui.mainscreen) vline(getappdata(0,'ccestart'),'--k','CCE Start');vline(getappdata(0,'cceend'),'--k','CCE End');end</code>Basically it just checks that if there exists values for CCE Start and CCE End, which it then uses as the x coordinates. The problem is that for about the first five executions of the timer function, it does plot them in the correct figure. But after that, Matlab decides to open a new figure for me. I get no error message, or any reason for that. This is very annoying, and I'd love to know how to fix this bug. Or if it is fixable at all. Any help would be greatly appreciated. Thank you!

 

[oswaler]

I can see that you have set up a GUI in Matlab to read and plot data from an oscilloscope. It seems like you have successfully implemented a timer function that updates the graph at a frequency of 1 Hz. In order to add two vertical lines to the same figure, you are using the vline-function from Mathworks file central. Your code checks for the existence of values for CCE Start and CCE End, and then uses them as the x coordinates for plotting the lines.

However, you have encountered a problem where after the first five executions of the timer function, Matlab opens a new figure instead of plotting the lines in the correct figure. This can be frustrating and you are looking for a solution to fix this bug.

I would suggest that you carefully check your code and make sure that there are no errors or conflicts that could be causing this issue. You may also want to try debugging your code to see where the problem is occurring. Additionally, you can try reaching out to the Mathworks community or their technical support team for assistance in resolving this issue.

In general, it is important to thoroughly test and debug your code when developing a GUI in Matlab or any other programming language. This will help ensure that your program runs smoothly and without any unexpected errors. I wish you the best of luck in resolving this issue and successfully implementing your GUI.