load enso;
f = fit(month,pressure,'fourier2')
plot(f,month,pressure)

w = f.w
2*pi/w

2楼: Originally posted by FMStation at 2016-09-23 17:58:06
https://www.mathworks.com/help/curvefit/fourier.html

Fit a Two-Term Fourier Model

load enso;
f = fit(month,pressure,'fourier2')
plot(f,month,pressure)

w = f.w
2*pi/w