col_to_rgb

This is a faster replacement for <code><a href="/link/grDevices%3A%3Acol2rgb()?package=colorfast&version=1.0.1" data-mini-rdoc="colorfast::grDevices::col2rgb()">grDevices::col2rgb()</a></code> which uses 
a hash lookup of R color names (rather than a linear search).

Color values in R are often represented as strings of hexadecimal
colors or named colors. This package offers fast conversion of
these color representations to either an array of red/green/blue/alpha values
or to the packed integer format used in native raster objects. Functions
for conversion are also exported at the 'C' level for use in other packages.
This fast conversion
of colors is implemented using an order-preserving minimal perfect hash
derived from Majewski et al (1996) "A Family of Perfect Hashing Methods"
<doi:10.1093/comjnl/39.6.547>.

Mike Cheng

colorfast

Fast Conversion of R Colors to Color Component Values and Native
Packed Integer Format

col_to_rgb function

<dl><dt>col</dt>
<dd>Character vector of color names. Supports all R color names
(e.g. "red", "hotpink") and hex colors of the form: "#RRGGBBAA", 
"#RRGGBB", "#RGBA" and "#RGB".</dd></dl>

Arguments

This is a faster replacement for <code><a href='https://rdrr.io/r/grDevices/col2rgb.html'>grDevices::col2rgb()</a></code> which uses 
a hash lookup of R color names (rather than a linear search).

Fast conversion of colors-as-strings to a matrix of RGBA integers — col_to_rgb

<dl>

<dt>col</dt>
<dd>Character vector of color names. Supports all R color names
(e.g. "red", "hotpink") and hex colors of the form: "#RRGGBBAA", 
"#RRGGBB", "#RGBA" and "#RGB".</dd>

</dl>

col_to_rgb: Fast conversion of colors-as-strings to a matrix of RGBA integers

Description

Usage

Value

Arguments

Examples