darc: Circular Arc

In GEOmap: Topographic and Geologic Mapping

Circular Arc

Description

Draw acircular arc from angle 1 to angle 2 at a given location.

Usage

darc(rad = 1, ang1 = 0, ang2 = 360, x1 = 0, y1 = 0, n = 1)

Arguments

rad	radius
ang1	angle 1, degrees
ang2	angle 2, degrees
x1	x location, plot coordinates
y1	y location, plot coordinates
n	increment for number of segments, degrees

Details

If angle1 > angle2 arc is drawn in opposite direction

Value

list(x,y)

Author(s)

Jonathan M. Lees<[e-mail]>

Examples

plot(c(0,1), c(0,1), type='n', ann=FALSE, asp=1)

A = darc(.3, 23, 47, .5, .5, n=1)

lines(A$x, A$y)

GEOmap documentation built on Sept. 1, 2023, 5:09 p.m.