Select samples from plot

1 view (last 30 days)
Miguel Albuquerque
Miguel Albuquerque on 10 Jun 2022
Answered: KSSV on 10 Jun 2022
Hey to all, this is probably very easy, but im struggling with it, thanks in advance. I have the spectrum of a signal represented in the image above. I need to select samples from x axis(frequency) where y axis is superior to -140dB.
Basiccaly I want two things, select the samples from x where y is superior to -140 and select y samples where y is superior to -140. I was thinking of using the find function, right?

Accepted Answer

KSSV
KSSV on 10 Jun 2022
Let f be your x-axis i.e. frequency values and s be your y-axis i.e. specturm values.
idx = s > -140 ;
x1 = x(idx) ;
s1 = s(idx) ;

More Answers (0)

Products


Release

R2021b

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by