回复： how to combine some dynamic data(DDT) to one DDT?

[weizhongpeng]

We need waveform of incoming DDT can be refreshed every one second.So we use DAQmx to acquire data 10k points per time and the data rate is 10k.But the points of 10k is not enough for us to do FFT to display the frequency spectrum,which needs 100k points,that's to say,ten times of acquisition.So the question is how to combine ten DDTs of 10k points to one DDT of 100k points and display the frequency spectrum for every ten seconds? If cannot, could I change DDT to some other data forms to do so?

Thanks a lot!

[yq_LabVIEW]

Hi

You can convert each piece of DDT to an 1D array, then connect the arrays. And then convert the big 1D array back to DDT.

AE

NI Shanghai