0

I have a data set containing x (time) and y (concentration). Is it possible to calculate nyquist frequency from this ?

From the below time series the y values are being generated by solving a system of ODE's.

The time period of cycle is 24hrs (1440 min)

time=[0:0.05:1440]; %time in minutes

Thanks

Nick
  • 51
  • 1
  • 6

1 Answers1

0

Given an evenly sampled signal sampled at a rate R samples per seconds, the Nyquist frequency can be obtained as half the sampling rate or R/2.

In your specific case, you have 1 sample every 0.05 minute, so the sampling rate is 20 samples per minutes, or ~0.333 sample per seconds (i.e. ~0.333Hz). The Nyquist frequency is thus ~0.167Hz.

SleuthEye
  • 14,379
  • 2
  • 32
  • 61
  • Thank you. So the Nyquist frequency only depends on the sampling rate ? – Nick Jul 26 '16 at 21:48
  • @SleuthEye: Do you have an email address where I could email you off list. This is not spam. Mine is markleeds2 at gmail.com. Thanks. – mark leeds Dec 11 '16 at 20:07
  • @markleeds if you need clarification on an existing answer, I usually reply to such requests when I receive the @ notification. Otherwise, if you have other questions that are on topic why not post them as such? – SleuthEye Dec 11 '16 at 20:54
  • @SleuthEye. Would prefer to send latex document to you. Thanks for all you do on this list. It's pretty amazing.: – mark leeds Dec 12 '16 at 22:54