open_window

calculates the period at each row from the row of interest

internal

Provides rolling statistical functions based
on date and time windows instead of n-lagged observations.

Michael Schramm

tbrf

Time-Based Rolling Functions

Frank Harrell

Bob Rudis

open_window function

<dl><dt>x</dt>
<dd>dataframe</dd>
<dt>tcolumn</dt>
<dd>time column</dd>
<dt>unit</dt>
<dd>unit</dd>
<dt>n</dt>
<dd>desired n</dd>
<dt>i</dt>
<dd>row number</dd>
<dt>na.pad</dt>
<dd>logical if `na.pad = TRUE` incomplete windows (duration of the window &lt; `n`) return `NA`.</dd></dl>

Arguments

Open Window — open_window

<dl>

<dt>x</dt>
<dd>dataframe</dd>


<dt>tcolumn</dt>
<dd>time column</dd>


<dt>unit</dt>
<dd>unit</dd>


<dt>n</dt>
<dd>desired n</dd>


<dt>i</dt>
<dd>row number</dd>


<dt>na.pad</dt>
<dd>logical if `na.pad = TRUE` incomplete windows (duration of the window &lt; `n`) return `NA`.</dd>

</dl>

open_window: Open Window

Description

Usage

Value

Arguments