I need help for graph filtering

Let's say I have 3 graphs (fft graphs). I want to get from each of these graphs all peaks (y and corresponding x) and the number of time of occurence for each of these peak in each graph.

which tools should I use ??

Answer 1

[Walter Roberson]

See this file exchange contribution -- provided that is that what you have is the data for the arrays, not image files.

[Joel Sande]

Thank you soooo much. That is exactely what I wanted.