How to find out distance among peaks from a plot?

some binary intensity values have stored in a profile and has been plotted. And getting some peaks from it. Here plot function has been used. How to find out distance among the peaks?

[Adam]

doc findpeaks

if you have the Signal Processing toolbox

[Zara Khan]

Yes. But distance I am not able to find

Answer 1

[Wooshik Kim]

findpeaks gives you location of the peak as well

[pks,locs] = findpeaks(PeakSig,x);
dist = locs(2) - locs(1); %or whichever two peaks you want to know about

[Zara Khan]

For different different graphs I am getting different different peaks. after counting no of peaks I want to find out distance between each of them means distance between first and second, between second and third and so on. How to do that ?

[Adam]

diff( locs )

Answer 2

[Rahul punk]

%If y is your signal

x=10:0.1:100;

y=100*cos(x)./x;

plot(x,y)

% you have to specify what is the major peak

min_peak=2

[peaks,idx1]=findpeaks(y)

% Major peaks and indices

[major_peaks, index]=find(peaks>=min_peak)

indices=idx1(index)

%distances

distances=mean(diff(indices))