tolong: Reshape columns into key/value rows

In basetable: Fast and Memory-Efficient Base R Table Manipulation

Reshape columns into key/value rows

Description

Reshape columns into key/value rows

Usage

tolong(
  data,
  cols,
  names = "variable",
  values = "value",
  idcols = NULL,
  na.rm = FALSE
)

Arguments

data	A data.frame.
cols	Character vector of column names.
names	Name for the resulting key/value column, depending on the function.
values	Vector or list of replacement values.
idcols	Columns to keep as row identifiers.
na.rm	Drop missing values before computing the result.

Value

A long-format basetable.

basetable documentation built on Sept. 18, 2026, 9:13 a.m.