Plot a curve with coordinates

Hi!

I determined the peaks of my data. If I plot it, I just get those peaks, but I need a curve through those points.

This is how I determine the peaks:

[Minima indexminima1] = findpeaks(-BoSMax1);

[Maxima indexmaxima1] = findpeaks(BoSMax1);

Pieken1 = [indexminima1 indexmaxima1];

sort(Pieken1);

BoSMax11= zeros(size(t));

BoSMax11(Pieken1) = BoSMax1(Pieken1);

Can someone please help me?

Answer 1

[Star Strider]

Without knowing what your data are, this will plot the peak and valley values as a functions of the indices:

figure
plot(indexminima1, -Minima)
hold on
plot(indexmaxima1, Maxima)
hold off
grid

Those should produce plots with straight lines connecting the maxima and another connecting the minima.

If you want to estimate the parameters of a function fitted to those points, there are several options, depending on your data and the functions you want to fit to them.