dfidx: unfold_idx – R documentation

Become an expert in R — Interactive courses, Cheat Sheets, certificates and more!

unfold_idx

Fold and Unfold a dfidx object

Description

fold_idx takes a dfidx, includes the indexes as stand alone columns, remove the idx column and return a data.frame, with an ids attribute that contains the informations about the indexes. fold_idx performs the opposite operation

Usage

unfold_idx(x)

fold_idx(x, pkg = NULL)

Arguments

`x`	a `dfidx` object
`pkg`	if not `NULL`, this argument is passed to `dfidx`

Value

a data.frame for the unfold_dfidx function, a dfidx object for the fold_dfidx function

Author(s)

Yves Croissant

Examples

data("TravelMode", package = "AER")
TM <- dfidx(TravelMode)
TM2 <- unfold_idx(TM)
attr(TM2, "ids")
TM3 <- fold_idx(TM2)
identical(TM, TM3)

dfidx

Indexed Data Frames

v0.0-4

GPL (>= 2)

Authors

Yves Croissant [aut, cre]

Initial release

2021-02-02