fable package error: no applicable method for 'model' applied to

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_tibble(., index = time) %>%
  model(arima = ARIMA(val))

它产生错误：

Error in UseMethod("model") : 
  no applicable method for 'model' applied to an object of class "c('tbl_df', 'tbl', 'data.frame')"

我不确定我做错了什么。我看不出它和这个有什么不同 fable example

Answer 1

在这里，我们需要 as_tsibble 而不是 as_tibble。根据?model

.data - A data structure suitable for the models (such as a tsibble)

library(dplyr)
library(fpp3)
df %>% 
    as_tsibble(., index = time) %>% 
    model(arima = ARIMA(val))
# A mable: 1 x 1
#           arima
#         <model>
#1 <ARIMA(0,1,0)>

fable package error: no applicable method for 'model' applied to

fable package error: no applicable method for 'model' applied to

r

time-series

arima

fable-r