Finding Maximum Value In Array

Hi, I have an array where the first row is data, and the second row is frequency, I also have a graph of this data versus frequency. I want to find the maximum values of this data, as it spikes at certain frequencies, and the frequency associated with these maximums. I can't work out how to do it at all. a is the data. NEWF is the frequency.

array = [a;NEWF]

Any advice?

Thanks, Chris.

Answer 1

[Sean de Wolski]

doc max

Look at both output arguments. The second one, index, will tell you where to grab from.

Answer 2

[Image Analyst]

If you have multiple peaks, try findpeaks() in the Signal Processing Toolbox, or imregionalmax() in the Image Processing Toolbox. If you don't have either toolbox, check the File Exchange.