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tidyverts / fabletools

General fable features useful for extension packages
http://fabletools.tidyverts.org/
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Error: Can't cast <lst_mdl> to <lst_mdl>. #175

Closed realauggieheschmeyer closed 4 years ago

realauggieheschmeyer commented 4 years ago

Hello. I was hoping to get some help with the following error. No matter which model I try to fit (ARIMA, STL, etc.), I get an error message about casting <lst_mdl>. I couldn't find any other examples of someone running into this error and I'm not sure how to debug myself.

Any thoughts?

library(tsibble)
library(fable)
#> Loading required package: fabletools

tibble(date = seq.Date(as.Date('2019-01-01'), as.Date('2019-12-31'), 1),
       volume = arima.sim(n = 365, list(
         ar = c(0.8897,-0.4858),
         ma = c(-0.2279, 0.2488)
       ),
       sd = sqrt(0.1796))) %>% 
  as_tsibble(index = date) %>% 
  model(ARIMA(volume))
#> Error: Can't cast <lst_mdl> to <lst_mdl>.

Created on 2020-03-12 by the reprex package (v0.3.0)

mitchelloharawild commented 4 years ago

This issue is being worked on right now :smile:

The problem is due to changes in upcoming versions of tibble and dplyr. In the development version of these packages, they use vctrs to handle manipulation of data. The CRAN version of fable is incompatible with the development versions of tibble and dplyr. A dev version of fable(tools) that will resolve this issue will be available on GitHub today, and on CRAN next week.

mitchelloharawild commented 4 years ago

Added in dc1bd1c475dcad8fb4fff90ec93f3124674ed1f1