build_datalist: Build list of data.frames

In leeper/prediction: Tidy, Type-Safe 'prediction()' Methods

Description

Construct a list of data.frames based upon an input data.frame and a list of one or more at values

Usage

build_datalist(data, at = NULL, as.data.frame = FALSE, ...)

Arguments

data	A data.frame containing the original data.
at	A list of one or more named vectors of values, which will be used to specify values of variables in data. All possible combinations are generated. Alternatively, this can be a data frame of combination levels if only a subset of combinations are desired. See examples.
as.data.frame	A logical indicating whether to return a single stacked data frame rather than a list of data frames
...	Ignored.

Value

A list of data.frames, unless as.data.frame = TRUE in which case a single, stacked data frame is returned.

Author(s)

Thomas J. Leeper

See Also

find_data, mean_or_mode, seq_range

Examples

# basic examples
require("datasets")
build_datalist(head(mtcars), at = list(cyl = c(4, 6)))

str(build_datalist(head(mtcars), at = list(cyl = c(4,6), wt = c(2.75,3,3.25))), 1)

str(build_datalist(head(mtcars), at = data.frame(cyl = c(4,4), wt = c(2.75,3))))

leeper/prediction documentation built on Jan. 1, 2020, 6:10 p.m.