extract_ptype() extracts a tibble with 0 rows from data. This contains
all of the required information about column names, classes, and factor
levels that are required to check the structure of new data at prediction
time.
Usage
extract_ptype(data)
Value
A 0 row slice of data after converting it to a tibble.
Arguments
data
A data frame or matrix.
Details
extract_ptype() is useful when creating a new preprocessing blueprint. It
extracts the required information that will be used by the validation checks
at prediction time.