col2alpha: get R color alpha value

In jmw86069/jamba: Jam Base Methods

get R color alpha value

Description

Return the alpha transparency per R color

Usage

col2alpha(x, maxValue = 1, ...)

Arguments

x	R compatible color, either a color name, or hex value, or a mixture of the two. Any value compatible with col2rgb.
maxValue	numeric maximum value to return, useful when the downstream alpha range should be 255. By default maxValue=1 is returned.

See Also

Other jam color functions: alpha2col(), applyCLrange(), col2hcl(), col2hsl(), col2hsv(), color2gradient(), fixYellowHue(), fixYellow(), getColorRamp(), hcl2col(), hsl2col(), hsv2col(), isColor(), kable_coloring(), makeColorDarker(), make_html_styles(), make_styles(), rgb2col(), setCLranges(), setTextContrastColor(), showColors(), unalpha(), warpRamp()

jmw86069/jamba documentation built on March 26, 2024, 5:26 a.m.