.convert_alpha

The function accepts a numeric (or NULL/NA) or a two-character hex encoded alpha representation and returns a the respective other representation.

internal

To enable fit-for-purpose, reusable clinical and medical
research focused visualizations and tables with sensible defaults and
based on graphical principles as described in: "Vandemeulebroecke et
al. (2018)" <doi:10.1002/pst.1912>, "Vandemeulebroecke et al. (2019)"
<doi:10.1002/psp4.12455>, and "Morris et al. (2019)"
<doi:10.1136/bmjopen-2019-030215>.

Mark Baillie

visR

Clinical Graphs and Tables Adhering to Graphical Principles

Diego Saldana

Charlotta Fruechtenicht

Marc Vandemeulebroecke

Thanos Siadimas

Pawel Kawski

Steven Haesendonckx

James Black

Pelagia Alexandra Papadopoulou

Tim Treis

Rebecca Albrecht

Ardalan Mirshani

Daniel D. Sjoberg

.convert_alpha function

<dl><dt>numeric_alpha</dt>
<dd>A numerical value between 0 and 1.</dd>
<dt>hex_alpha</dt>
<dd>A two-letter character string.</dd></dl>

Arguments

Converts an alpha value between its numeric and its hex-encoded form. — .convert_alpha

<dl>

<dt>numeric_alpha</dt>
<dd>A numerical value between 0 and 1.</dd>


<dt>hex_alpha</dt>
<dd>A two-letter character string.</dd>

</dl>

Converts an alpha value between its numeric and its hex-encoded form.

.convert_alpha: Converts an alpha value between its numeric and its hex-encoded form.

Description

Usage

Value

Arguments