shadowtext: Add Shadowed Text to a Plot

In taranu/astro: Astronomy Functions, Tools and Routines

Description

Add text with a shadowed background to a plot.

Usage

shadowtext(x, y = NULL, labels, col = "white", bg = "grey25", 
           theta = (1:8/4)*pi, r1 = 0.06, r2 = 0.04, ...)

Arguments

x,y	numeric vectors of coordinates where the text labels should be written
labels	a character vector or expression specifying the text to be written
col	foreground text colour
bg	background text colour
theta	position angle offsets for the background shading
r1	shadow width
r2	shadow height
...	additional arguments to be passed to 'text'

Details

'shadowtext' works by plotting the text initially at positions slightly offset from the central position in a darker background colour, and then over-plots the desired text (twice, to avoid anti-aliasing effects).

Author(s)

Lee Kelvin <[e-mail]>

See Also

The astronomy package: astro.

taranu/astro documentation built on May 23, 2019, 7:36 a.m.