Local min and max

[jeongho20000]

I have a dataset which contains keystrok forces in it. Since the data points are oscillating, I can't find a local min and max by using first-derivative:i.e. there are too many zeros for the first derivatives. Is there any way for me to get local min and max?

Thanks,

Jay 

[George_P_Burdell]

Have you tried using the Waveform Min Max.vi (Programming » Waveform » Analog Waveform » Waveform Min Max.vi) or the Array Max & Min function (Programming » Array » Array Max & Min).  Will this work for your application?

[Cory_K]

You could use 'Waveform Peak Detector'.

You pass in an array of data.

Then specify if you are looking for Peaks (max) or Valleys (min).

You may also specify a threshold so only major peaks are caught.

Also, you may use 'peak width' to ensure that noise is not considered max/min.