finding peak to draw a smooth curve

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Hi All,
I have attached a plot (blue) in which i want to identify peaks (red circle) and draw a smooth curve with similar shape (black) joining the detected read peaks. Can someone please help me here?
Thanks
Sowmya

Accepted Answer

Star Strider
Star Strider on 14 Aug 2019
Try this:
x = 0:10; % Create Data
y = rand(1,11); % Create Data
[pks,locs] = findpeaks(y); % Peaks ^ Location Indices
xi = linspace(min(x), max(x), 75); % Interpolation Vector
yi = interp1(x([1 locs end]), y([1 locs end]), xi, 'pchip'); % Interpolate
figure
plot(x,y)
hold on
plot(x(locs), y(locs), '^r')
plot(xi, yi, '-g')
hold off

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