waveform compare

[ciomp]

hello everybody. i have a question how to compare two wawveforms ,which is turned by a 1-D array .

   how to know the relations between the two .  is there  the function in labview .my version is LabVIEW 7.1.

thanks .

[TiTou]

What do you mean by "compare 2 waveforms" ? There are loads of possibilities in LabVIEW. First thing that could help to compare would be to have to curves on the same graph/chart, would that match your needs ??

[felan]

Hi, I think you really need to clarify what about the two waveforms you want to know. Cos you can:
1. Plot them and compare
2. Perform spectral analysis and compare
3. Use correlation and correlation coefficients to compare
So it really depends on what you're looking for.



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[herrit]

Hi,

I've got a question about comparing different datatypes. We show two different signals on a chart. one is the temperature and another plot shows the temperature limit. if the temperature exeeds this limit the output of the compare instruction must go hi. In the beginning this worked because we used DLB for waveform and limitplot. But now we need to compare DBL and waveform how do we do that?

Thanks in advance!

Gerrit

[MikeS81]

Hi herrit,

you can use the "Get Waveform Components" to get a dbl array of your values.

Mike