how to plot a part of an signal using start and end point, that is stored in an different matrix? also how to calculate the local minima and maxima (ups and downs) within that array?

Let A be my original signal. I want to plot B using parts of the signal A, using location data from a DIFFERENT array ( say K) using a FOR loop. The location data are stored nicely in K (K[i] and K[i+1] marks the start and end of the data)

Let the circled pulse be nth and I want to calculate the fluctuations of nth plot? Can anyone help me with the code ?

Answer 1

[Azzi Abdelmalek]

i1=10
i2=30
yy=y(i1:i2)
plot(yy)

Answer 2

[Walter Roberson]

http://www.mathworks.com/matlabcentral/answers/284033-how-to-find-different-frequency-for-each-non-zero-amplitude-separated-by-zero-amplitude-inside-a-si#comment_366505

For the plotting, just

sta = StartAt(K);
sto = StopAt(K);
plot(t(sta:sto), YourData(sta:sto))

[kedar Paul]

I want to do this using for loop as I have multiple pulses

[Walter Roberson]

for K = 1 : length(StartAt)
  sta = StartAt(K);
  sto = StopAt(K);
  plot(t(sta:sto), YourData(sta:sto));
  hold on
end

set(gca, 'xlimmode', 'auto', 'ylimmode', 'auto')