axis.circular: Add Axis to a Circular Plot

In circular: Circular Statistics

Add Axis to a Circular Plot

Description

Add axis to a plot of circular data points on the current graphics device.

Usage

axis.circular(at=NULL, labels=NULL,  units = NULL, template=NULL,  
          modulo=NULL, zero=NULL, rotation=NULL, tick=TRUE, lty, lwd, 
          cex, col, font, tcl=0.025, tcl.text=0.125, digits=2)

Arguments

at	the points at which tick-marks are to be drawn. If NULL the tick-marks are placed to 0, pi/2, pi and 3pi/2 radians.
labels	a vector of character strings to be placed at the tickpoints. If NULL the labels are chosen according to units and template arguments.
units	either radians or degrees. If NULL the value is taken from the attributes of the object at.
template	either none or geographics. If NULL the value is taken from the attributes of the object at.
modulo	either asis or 2pi or pi. If NULL the value is taken from the attributes of the object at.
zero	the zero of the plot (in radians, counterclockwise). If NULL the value is taken from the attributes of the object at.
rotation	the rotation of the plot. If NULL the value is taken from the attributes of the object at.
tick	logical: if TRUE ticks are plotted at tick-marks.
lty, lwd	line type, width for the tick marks. If missing means to use ‘par("lty")’ and ‘par("lwd")’.
cex	a numerical value giving the amount by which plotting text and symbols should be scaled relative to the default.
col	color for the the tick marks. If missing means to use ‘par("col.axis")’.
font	font for text. If missing means to use ‘par("font.axis")’.
tcl	The length of tick marks.
tcl.text	The position of the axis labels.
digits	number of digits used to print axis values.

Author(s)

Claudio Agostinelli

See Also

plot.circular and ticks.circular.

Examples

data.vm <- rvonmises(n=100, mu=circular(0), kappa=3) 
plot(data.vm, axes=FALSE, ticks=FALSE)
axis.circular(at=circular(seq(0, 11/6*pi, pi/6)), labels=c("0",
expression(frac(pi,6)), expression(paste(frac(1,3), pi)),
expression(frac(pi,2)), expression(paste(frac(2,3), pi)),
expression(paste(frac(5,6), pi)), expression(pi),
expression(paste(frac(7,6), pi)), expression(paste(frac(4,3), pi)),
expression(paste(frac(3,2), pi)), expression(paste(frac(5,3), pi)),
expression(paste(frac(11,6), pi))))

circular documentation built on Sept. 11, 2024, 8:21 p.m.