pdp (version 0.8.3)

exemplar: Exemplar observation

Description

Construct a single "exemplar" record from a data frame. For now, all numeric columns (including "Date" objects) are replaced with their corresponding median value and non-numeric columns are replaced with their most frequent value.

Usage

exemplar(object)
# S3 method for data.frame
exemplar(object)
# S3 method for matrix
exemplar(object)
# S3 method for dgCMatrix
exemplar(object)

Value

A data frame with the same number of columns as object and a single row.

Arguments

object

A data frame, matrix, or dgCMatrix (the latter two are supported by xgboost).

Examples

set.seed(1554)  # for reproducibility
train <- data.frame(
  x = rnorm(100),
  y = sample(letters[1L:3L], size = 100, replace = TRUE,
             prob = c(0.1, 0.1, 0.8))
)
exemplar(train)