Trains specified model definition(s) to a dataset. This function will
estimate the a set of model definitions (passed via `...`

) to each series
within `.data`

(as identified by the key structure). The result will be a
mable (a model table), which neatly stores the estimated models in a tabular
structure. Rows of the data identify different series within the data, and
each model column contains all models from that model definition. Each cell
in the mable identifies a single model.

```
model(.data, ...)
# S3 method for tbl_ts
model(.data, ..., .safely = TRUE)
```

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

`tsibble`

)- ...
Definitions for the models to be used. All models must share the same response variable.

- .safely
If a model encounters an error, rather than aborting the process a NULL model will be returned instead. This allows for an error to occur when computing many models, without losing the results of the successful models.

It is possible to estimate models in parallel using the
future package. By specifying a
`future::plan()`

before estimating the models, they will be computed
according to that plan.

Progress on model estimation can be obtained by wrapping the code with
`progressr::with_progress()`

. Further customisation on how progress is
reported can be controlled using the `progressr`

package.

```
library(fable)
library(tsibbledata)
# Training an ETS(M,Ad,A) model to Australian beer production
aus_production %>%
model(ets = ETS(log(Beer) ~ error("M") + trend("Ad") + season("A")))
#> # A mable: 1 x 1
#> ets
#> <model>
#> 1 <ETS(M,Ad,A)>
# Training a seasonal naive and ETS(A,A,A) model to the monthly
# "Food retailing" turnover for selected Australian states.
library(dplyr)
progressr::with_progress(
aus_retail %>%
filter(
Industry == "Food retailing",
State %in% c("Victoria", "New South Wales", "Queensland")
) %>%
model(
snaive = SNAIVE(Turnover),
ets = ETS(log(Turnover) ~ error("A") + trend("A") + season("A")),
)
)
#> # A mable: 3 x 4
#> # Key: State, Industry [3]
#> State Industry snaive ets
#> <chr> <chr> <model> <model>
#> 1 New South Wales Food retailing <SNAIVE> <ETS(A,A,A)>
#> 2 Queensland Food retailing <SNAIVE> <ETS(A,A,A)>
#> 3 Victoria Food retailing <SNAIVE> <ETS(A,A,A)>
```