LabVIEW
Can I use scan interface mode when collecting data from cRIO? How do I display the continuously collected data on a waveform graph?
Solved!
It sounds like you should be using a waveform chart rather than the graph. Is there some other requirement prohibiting this?
@gleekd wrote:
Thank you for replying!! Actually I am interested in detecting the peaks for the continuously collected data. I know that if the data can be displayed on the waveform graph, then it can be connected to the peak detector vi as well, because they can both connect to 1D array. I think I should have worded the question more directly. I hope I am making sense. Do you have solutions to this? Thanks again for your response!
So, there's a few paths you could take with this. One, there's a pt by pt Peak Detector that will accept a scalar and internally keep track of the preceding points. With this method you could use the Waveform Chart.
Two, if you're not concerned with seeing the data charted live, you can simply index your values at the edge of the loop and wire them to the Waveform Graph and Peak detector vis after it is all collected.
Third, If you want to see the data live and not do pt by pt, I would use the Waveform Chart, but build an array with each point as they come in, like so.
If you go this route there are better ways to build your array and may yet be better suited for what you're trying to accomplish anyway.
If you know when a peak exists, it's not terribly difficult to keep track of timing or indices or whatever you need. For a simple example look at the attached snippet. You could additionally keep track of a tick count or something if you need specific timing.
