labview peak data collection

[frogliang]

I would like to collect peaks data, but the amplitudes only contains peaks found in current block of data. If I use shift register on the whole while loop, the data store at each loop, there will be too many repeated data. What can I do?

[Bob_Schor]

Please attach your VI, not a picture of part of a VI.

Bob Schor

[frogliang]

Sorry!

Please see the attachment. I try output waveform chart at the peak amplitude, but is it repeated, I would like to make a scatter graph.

Do you have any ideas?

Thanks!

[GerdW]

Hi frogliang,

your core routine should look similar to this:

Btw.: NEVER delete the label of frontpanel elements!

(I replaced your DAQmx stuff with a WfmSigGen function.)

I try output waveform chart at the peak amplitude, but is it repeated, I would like to make a scatter graph.

There are no "charts" in your VI, all you do is to show some plots on XY graphs!

[frogliang]

Hi GerdW,

I tried, but it doesn't  seem to work out. Without data queue, the waveform is wired, and the array size is the number of samples, the peaks data is data block from this data block, still cannot show all the history peaks amplitude.

Thank you very much!

Best regards!

Liang

[GerdW]

Hi frogliang,

What did you try?

Attach your current state of the VI...