reg_matches

<code>reg_matches()</code> is a thin wrapper around <code><a href="/link/regmatches()?package=sdtm.oak&version=0.1.0" data-mini-rdoc="sdtm.oak::regmatches()">regmatches()</a></code> that returns
<code>NA</code> instead of <code>character(0)</code> when matching fails.

internal

An Electronic Data Capture system (EDC) and Data Standard agnostic
solution that enables the pharmaceutical programming community to develop
Clinical Data Interchange Standards Consortium (CDISC)
Study Data Tabulation Model (SDTM) datasets in R. The reusable algorithms
concept in 'sdtm.oak' provides a framework for modular programming and can
potentially automate the conversion of raw clinical data to SDTM through
standardized SDTM specifications. SDTM is one of the required standards for data
submission to the Food and Drug Administration (FDA) in the United States and
Pharmaceuticals and Medical Devices Agency (PMDA) in Japan. SDTM standards
are implemented following the SDTM Implementation Guide as defined by
CDISC <https://www.cdisc.org/standards/foundational/sdtmig>.

Rammprasad Ganapathy

sdtm.oak

SDTM Data Transformation Engine

Adam Forys

Edgar Manukyan

Rosemary Li

Preetesh Parikh

Lisa Houterloot

Yogesh Gupta

Omar Garcia

Ramiro Magno

Kamil Sijko

Shiyu Chen

Pattern Institute 

F. Hoffmann-La Roche AG 

Pfizer Inc 

Transition Technologies Science 

reg_matches function

<dl><dt>x</dt>
<dd>A character vector.</dd>
<dt>m</dt>
<dd>An object with match data.</dd>
<dt>invert</dt>
<dd>A logical scalar. If <code>TRUE</code>, extract or replace the non-matched
substrings.</dd></dl>

Arguments

<code>reg_matches()</code> is a thin wrapper around <code><a href='https://rdrr.io/r/base/regmatches.html'>regmatches()</a></code> that returns
<code>NA</code> instead of <code>character(0)</code> when matching fails.

regmatches() with NA — reg_matches

<dl>

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


<dt>m</dt>
<dd>An object with match data.</dd>


<dt>invert</dt>
<dd>A logical scalar. If <code>TRUE</code>, extract or replace the non-matched
substrings.</dd>

</dl>

<code>regmatches()</code> with <code>NA</code>

reg_matches: `regmatches()` with `NA`

Description

Usage

Value

Arguments