How do I create CV foldes manually in tidymodels?

[Gisli]

I am trying to figure out how I can manually define CV folds with rsample.

In mlr3 I can do this:

resampling = rsmp("custom")
resampling$instantiate(task,
  train = list(c(1:10, 51:60, 101:110)),
  test = list(c(11:20, 61:70, 111:120))
)

So I am looking for something similar in rsample, how is it possible to do this?

Gisli

[Hlynur]

Hi Gísli,

rsample does currently not support manually defining splits or folds as in the example you posted, but there is a (slight?) possibility that this might become a feature in the future, see here: https://github.com/tidymodels/rsample/issues/158.

kv.
Hlynur

[Gisli]

Thanks paisan

[Gisli]

I managed to do what I needed to do with group_vfold_cv.