display continuous data in a pop-up graph window

[cwn]

I'm generating random numbers, and I'm trying to display this continuously on a pop-up graph window. I've been able to make a pop-up window, and I can plot the data via a waveform chart, but I can't seem to put both of these features together. I would like to have the data run, and then at any point I could press a button that would bring up a graph which displays the previous values as well as the ones continually being generated. Is there a solution to this, or should I be trying another route than a pop-up window? I'm pretty new to LabView, so any help would be appreciated!

[CyGa]

Hi cwn,
You should be able to that using using VI sever functions. With the reference of your pop-up window, you can use an invoke node called Control Value=> Set value [Flattened] or Set value [variant]. I ususally use the Set value [variant] funstion and in my pop-up VI I cast the value according to the indicator type.

I hope this helps. If you have any problems, don't hesitate to post another message and I'll send you an exemple.

[cwn]

I appreciate your help zyl7, but I'm a little confused as to how to use the invoke node. If you have the time to show me an example, I'm pretty sure that would help.

[CyGa]

Hi cwn,
Attached to this message you'll find two files. The image shows how to send data to your pop-up indicator using an invoke node. The string constant is the label of the pop-up control that i want to reach.
In my application, i wanted to continuously read data from a control and display its value in the popup indoctor. The easiest way to do that is to send the reference of the control to read to the pop-up indicator. Then using VI servers function you can read the value of the control... My pop-up is set as reentrant so I can display several pop-ups at the same time and send them different references...

Once the value of the control is set, I activate the VI and run it...

I hope this helps...

[smercurio_fc]

I would suggest using a queue instead. This way you don't have to deal with flattening/unflattening, and setting the datatype for variants. Look in the Example Finder (Help->Find Examples) for examples on queues.