> w2<-ts(as.double(q),frequency=12)
> x2<-stl(w2,t.window=13,s.window='periodic')
> x2$trend
NULL #请问为什么调用不了 trend列
> x2
Call:
stl(x = w2, s.window = "periodic", t.window = 13)
Components
seasonal trend remainder
Jan 1 -0.011566230 0.1856958 6.870398e-03
Feb 1 -0.006897804 0.1831097 3.788094e-03
Mar 1 -0.008021039 0.1805236 7.497450e-03
Apr 1 -0.001075078 0.1788524 -2.777290e-03
May 1 0.004912546 0.1771811 -9.093693e-03
Jun 1 0.010218222 0.1761395 -1.635771e-02
Jul 1 0.011773898 0.1750978 -1.687172e-02
Aug 1 0.009499427 0.1775957 -2.109509e-02
Sep 1 0.005183281 0.1800935 2.372320e-02
> x2$remainder
NULL #请问为什么调用不了remainder这列