> str(fc)
List of 10
$ method : chr "ARIMA(0,1,1)"
$ model :List of 18
..$ coef : Named num -0.0852
.. ..- attr(*, "names")= chr "ma1"
..$ sigma2 : num 37.4
..$ var.coef : num [1, 1] 0.0309
.. ..- attr(*, "dimnames")=List of 2
.. .. ..$ : chr "ma1"
.. .. ..$ : chr "ma1"
..$ mask : logi TRUE
..$ loglik : num -99.6
..$ aic : num 203
..$ arma : int [1:7] 0 1 0 0 1 1 0
..$ residuals: Time-Series [1:32] from 1 to 32: 2.10e-02 1.78e-06 1.80 -1.25 -2.81 ...
..$ call : language Arima(y = mtcars$mpg, order = c(0, 1, 1), seasonal = c(1, 0, 0))
..$ series : chr "mtcars$mpg"
..$ code : int 0
..$ n.cond : int 0
..$ nobs : int 31
..$ model :List of 10
.. ..$ phi : num(0)
.. ..$ theta: num -0.0852
.. ..$ Delta: num 1
.. ..$ Z : num [1:3] 1 0 1
.. ..$ a : num [1:3] 6.4 -0.513 15
.. ..$ P : num [1:3, 1:3] 0.00 0.00 5.01e-22 0.00 0.00 ...
.. ..$ T : num [1:3, 1:3] 0 0 1 1 0 0 0 0 1
.. ..$ V : num [1:3, 1:3] 1 -0.08519 0 -0.08519 0.00726 ...
.. ..$ h : num 0
.. ..$ Pn : num [1:3, 1:3] 1.00 -8.52e-02 3.94e-23 -8.52e-02 7.26e-03 ...
..$ aicc : num 204
..$ bic : num 206
..$ x : Time-Series [1:32] from 1 to 32: 21 21 22.8 21.4 18.7 18.1 14.3 24.4 22.8 19.2 ...
..$ fitted : Time-Series [1:32] from 1 to 32: 21 21 21 22.6 21.5 ...
..- attr(*, "class")= chr [1:3] "forecast_ARIMA" "ARIMA" "Arima"
$ level : num [1:2] 80 95
$ mean : Time-Series [1:12] from 33 to 44: 20.9 20.9 20.9 20.9 20.9 ...
$ lower : Time-Series [1:12, 1:2] from 33 to 44: 13.05 10.27 8.07 6.2 4.55 ...
..- attr(*, "dimnames")=List of 2
.. ..$ : NULL
.. ..$ : chr [1:2] "80%" "95%"
$ upper : Time-Series [1:12, 1:2] from 33 to 44: 28.7 31.5 33.7 35.6 37.2 ...
..- attr(*, "dimnames")=List of 2
.. ..$ : NULL
.. ..$ : chr [1:2] "80%" "95%"
$ x : Time-Series [1:32] from 1 to 32: 21 21 22.8 21.4 18.7 18.1 14.3 24.4 22.8 19.2 ...
$ series : chr "mtcars$mpg"
$ fitted : Time-Series [1:32] from 1 to 32: 21 21 21 22.6 21.5 ...
$ residuals: Time-Series [1:32] from 1 to 32: 2.10e-02 1.78e-06 1.80 -1.25 -2.81 ...
- attr(*, "class")= chr "forecast"