Finding position of main peak and difference between main peak and next peak in a 1d plot

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Vinay Killamsetty
Vinay Killamsetty 2021-5-28
评论： Star Strider 2021-5-30
How to find the position of main peak in a 1 d plot
Then how to find the value of the difference between the main peak and the next peak in the same plot.

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Star Strider
Star Strider 2021-5-28
Ran in:
x = linspace(0,10);
y = 1.5*exp(-(x-2).^2) + 2*exp(-(x-7).^2*2.5) + exp(-(x-9).^2*5);
[pks,locs] = findpeaks(y)
pks = 1×3
1.4994 1.9954 0.9996
locs = 1×3
21 70 90
[maxpk,idx] = max(y)
maxpk = 1.9954
idx = 70
figure
plot(x, y)
hold on
plot(x(locs), pks, '^r')
hold off
Result = table(pks(:),locs(:),(locs(:)-idx),(x(locs(:))-x(idx)).', 'VariableNames',{'Peaks','Indices','Index_Difference','X_Difference'})
Result = 3×4 table
Peaks Indices Index_Difference X_Difference _______ _______ ________________ ____________ 1.4994 21 -49 -4.9495 1.9954 70 0 0 0.99959 90 20 2.0202
.

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