r - 寓言：错误：`mutate()` 输入 `arima` 出现问题

Question

这是我的代码：

library(fpp3)
val <- seq(1,100,1)
time <- seq.Date(as.Date("2010-01-01"),  by = "day", length.out =  100 )
df <- data.frame(val = val, time = time)
fit <- df %>% as_tsibble(., index = time) %>% 
  model(arima = ARIMA(val))

fc<- fit %>% forecast(h=7)

它生成：

Error: Problem with `mutate()` input `arima`.
x Input must be a vector, not a `fcdist` object.
i Input `arima` is `(function (object, ...) ...`.

这与本示例中的基本相同。我错过了什么？我已经仔细检查了胖手指错误。

标签： rtime-seriesforecastfable-r

Answer 1