rollapply: Rolling window apply

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

Rolling window apply

Description

Rolling window apply

Usage

rollapply(
  x,
  width,
  FUN,
  ...,
  align = c("right", "left", "center"),
  fill = NA,
  partial = FALSE
)

Arguments

x	An atomic vector.
width	Target width, in characters or rolling-window size depending on the function.
FUN	Function applied to each rolling window.
...	Additional arguments (unused, or passed through depending on the function).
align	Alignment of the rolling window relative to each position.
fill	Value used for positions where no window/result is available.
partial	Allow partial windows at the boundaries.

Value

A vector with one result per window.

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