How to take the absolute value for 2D spectrum?

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Ilya Grishanovich
Ilya Grishanovich 2022-4-21
评论： Ilya Grishanovich 2022-4-21
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)

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采纳的回答

Hiro Yoshino
Hiro Yoshino 2022-4-21
Ran in:
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);
?

更多回答（1 个）

Matt J
Matt J 2022-4-21
spectra=abs(spectra)

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