Peak Value of a signal

[Akaash_Dragon]

I have a signal which was collected from an experiment. Let us assume that I have converted it into the frequency domain(through FFT for example). Is there any way I can find the frequency which has the highest amplitude/power purely through labview and display it in the form of numeric data?

[Minions]

The output of an FFT is an array of counts/occurrences of frequencies.  Simply use the Min/Max function to find the peak number of occurrences.

[Dan_K]

In the future you should give a little more information about the format of the data you are using. Including some code is also usually a good idea.

Here are 2 examples of pulling a fundamental frequency from time-series data.