peaks values of each waveform

How can i select and plot the peak values of each sinusoidal wave in a nonlinear continuous waveform.

Answer 1

[Azzi Abdelmalek]

use findpeaks functin

[Rizwana Junaid]

thank you for ur great help

Answer 2

[Image Analyst]

If you have the signal Processing Toolbox, you can use findpeaks(), if you have the Image Processing Toolbox, you can use imregionalmax(). If you have neither of those, you can build your own with code like this: http://billauer.co.il/peakdet.html Or you can sift through the File Exchange: http://www.mathworks.com/matlabcentral/fileexchange/index?utf8=%E2%9C%93&term=peak - lots of them in there.

[Rizwana Junaid]

thank you for ur great help