make_splits function

Constructors for split objects

make_splits(x, ...)

## Default S3 method:
make_splits(x, ...)

## S3 method for class 'list'
make_splits(x, data, class = NULL, ...)

## S3 method for class 'data.frame'
make_splits(x, assessment, ...)

Arguments

• x: A list of integers with names "analysis" and "assessment", or a data frame of analysis or training data.
• ...: Not currently used.
• data: A data frame.
• class: An optional class to give the object.
• assessment: A data frame of assessment or testing data, which can be empty.

Examples

df <- data.frame(
  year = 1900:1999,
  value = 10 + 8*1900:1999 + runif(100L, 0, 100)
)
split_from_indices <- make_splits(
  x = list(analysis = which(df$year <= 1980),
           assessment = which(df$year > 1980)),
  data = df
)
split_from_data_frame <- make_splits(
  x = df[df$year <= 1980,],
  assessment = df[df$year > 1980,]
)
identical(split_from_indices, split_from_data_frame)