PLTcirc: Circle Plot with Cross Hairs

In RFOC: Graphics for Spherical Distributions and Earthquake Focal Mechanisms

Circle Plot with Cross Hairs

Description

Plot an arc of a circle with cross-hairs.

Usage

PLTcirc(gcol = "black", border = "black", ndiv = 36,
         angs = c(-pi, pi), PLOT = TRUE, add = FALSE)

Arguments

gcol	cross hairs color
border	border color
ndiv	number of divisions
angs	vector from angs[1] to angs[2] in radians
PLOT	logical, if TRUE plot
add	logical, if TRUE add to existing plot

Value

list used for plotting:

x	x coordinates
y	y coordinates
phi	angles, radians

Author(s)

Jonathan M. Lees <[e-mail]>

Examples

PLTcirc(gcol = "purple", border = "black", ndiv = 36, angs = c(-pi, pi), PLOT = TRUE, add = FALSE)

PLTcirc(gcol = NULL, border = "green" , ndiv = 36, angs = c(-pi/4, pi/4), PLOT = TRUE, add = TRUE)

RFOC documentation built on Sept. 8, 2023, 6:12 p.m.