How to take the absolute value for 2D spectrum?

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I have 2D spectrum with positive(blue) and negative(red) signals, I want to make all signals positive and to save the received spectra.
How to make it? (thank you in advance)

Accepted Answer

Hiro
Hiro on 21 Apr 2022
try function "abs":
t=-pi:0.01:pi
t = 1×629
-3.1416 -3.1316 -3.1216 -3.1116 -3.1016 -3.0916 -3.0816 -3.0716 -3.0616 -3.0516 -3.0416 -3.0316 -3.0216 -3.0116 -3.0016 -2.9916 -2.9816 -2.9716 -2.9616 -2.9516 -2.9416 -2.9316 -2.9216 -2.9116 -2.9016 -2.8916 -2.8816 -2.8716 -2.8616 -2.8516
y= sin(t);
plot(t,y);
y2 = abs(y);
plot(t,y2);
?

More Answers (1)

Matt J
Matt J on 21 Apr 2022
spectra=abs(spectra)

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