How to add waitbar to matlab gui with daq?

Hello everyone,

I'm making a gui to control sending signals through a daq system from ni.

Sending a signal through the system and reciving it back takes time, and im tying to make this time visible through a waitbar.

Now i've looked up some examples on how to use waitbar and how to embedded it with gui, but i didn't learn much and it still complicated to me.

Here is a section of the program:-

%----------------------------------------------------------------------------
addinput(dq, "Dev2", "ai10", "Voltage");       
addoutput(dq, "Dev2", "ao0", "Voltage");

TEST =A* chirp(t,x1,t1,x2);

%--------------------
axes(handles.axes1);
ao=TEST.*t
plot(t, ao,'linewidth',2);
grid on
title('Signal im Zeitbereich')
xlabel('t (s)')
ylabel('A (V)')
%----------
setappdata(0 ,'TEST',TEST)
setappdata(0 ,'t',t)
%----------
ao=ao'
data=readwrite(dq,(ao));
axes(handles.axes2);
plot(data.Time, data.Variables,'linewidth',2 )
title('Daten im Zeitbereich')
xlabel('t (s)')
ylabel('A (V)')
grid on
%----------
setappdata(0 ,'Data',data)
%----------
%----------------------------------------------------------------------------

If needed i can also attach the full program.

Regards,

Ali

[Rik]

I'm not sure what exactly you want to do. This thread is probably helpful.

Also, is there a specific reason you're storing data in the appdata of the groot?

[Ali Albaidhani]

Yes, im trying to show how much time the whole measurement takes with the waitbar. I also want to wait bar to be merged with the gui and not as a window that pops up when we execute the expression.

Im storing the data for later use for a different pushbutton.

[Rik]

I would suggest re-implementing the waitbar as an axes with a patch. Not as fancy as the built-in bar (for many releases), but it is much easier to work with.

There is no need to share data through the root object like that. You can use the guidata struct to store them in your GUI figure, or use setappdata to set them in one of the other objects. Using the root object has the same downsides as using global variables: they work perfectly, until they don't. And then you spend hours or days debugging code.

[Ali Albaidhani]

Thanks Rik,

The only problem here, is that im a beginner and i don't really know how to reimplement the waitbar.

I also don't know how to store the data the way you said, i just made a small google search and it showed me to store it that way and it is working fine till now.

[Rik]

Did you read the link I posted? Did you read the documentation for the patch function? If you simply have one side of an axes filled with a color, that looks like a progress bar. There are probably also dozens of progress bars on the file exchange.

As for the data: did you read the link I posted? Did you read the documentation for the guidata function? Or for the setappdata function?

It works fine for now, but once you run a second instance it will cause strange problems. Or if you create a second thing and run both of them at the same time. The fact that it works now is not really related to the whether it is a good idea.

Everybody starts out as a beginner. It is your choice whether you want to stay a beginner. Read the documentation and read the links with long advice threads. They contain a lot of advice.