lead

Analogous function for <code>lead</code> and <code>lag</code> in dplyr by
wrapping data.table's <code>shift</code>.

Tidy syntax for 'data.table', using modification by reference whenever possible.
This toolkit is designed for big data analysis in high-performance desktop or laptop computers.
The syntax of the package is similar or identical to 'tidyverse'.
It is user friendly, memory efficient and time saving. For more information,
check its ancestor package 'tidyfst'.

Tian-Yuan Huang

tidyft

Fast and Memory Efficient Data Operations in Tidy Syntax

lead function

<dl><dt>x</dt>
<dd>A vector</dd>
<dt>n</dt>
<dd>a positive integer of length 1,
giving the number of positions to lead or lag by. Default uses 1</dd>
<dt>fill</dt>
<dd>Value to use for padding when the window goes beyond the input length.
Default uses <code>NA</code></dd></dl>

Arguments

Fast lead/lag for vectors — lead

<dl>

<dt>x</dt>
<dd>A vector</dd>


<dt>n</dt>
<dd>a positive integer of length 1,
giving the number of positions to lead or lag by. Default uses 1</dd>


<dt>fill</dt>
<dd>Value to use for padding when the window goes beyond the input length.
Default uses <code>NA</code></dd>

</dl>

lead: Fast lead/lag for vectors

Description

Usage

Value

Arguments

See Also

Examples