View source: R/points.circular.R
points.circular | R Documentation |
Add points to a plot of circular data points on the current graphics device.
## S3 method for class 'circular'
points(x, pch = 16, cex = 1, stack = FALSE,
start.sep=0, sep = 0.025,
shrink = 1, bins = NULL, col = NULL, next.points = NULL,
plot.info = NULL, zero = NULL, rotation = NULL, ...)
x |
a vector, matrix or data.frame. The object is coerced to class |
pch |
point character to use. See help on |
cex |
point character size. See help on par. |
stack |
logical: if |
start.sep |
constant used to specify the distance between the center of the point and the axis. |
sep |
constant used to specify the distance between stacked points,
if |
shrink |
parameter that controls the size of the plotted circle. Default is 1. Larger values shrink the circle, while smaller values enlarge the circle. |
bins |
if |
col |
color of the points. The values are recycled if needed. |
next.points |
if |
plot.info |
an object from |
zero |
the zero of the plot. Ignored if |
rotation |
the rotation of the plot. Ignored if |
... |
further parameters passed to |
When there are many closely distributed observations, stacking is
recommended. When stacking the points, if there are many points in a particular bin, it may be necessary to shrink the plot of the circle so that all points fit. This is controlled with the parameter shrink
. Generally the parameter sep
does not need adjustment, however, when shrinking the plot, or for a very large number of observations, it may be helpful. Since version 0.3-9 the intervals are on the form [a,b).
A list with information on the plot: zero, rotation and next.points.
Claudio Agostinelli
plot.circular
and lines.circular
.
data.1 <- rvonmises(n=100, mu=circular(0), kappa=3)
data.2 <- rvonmises(n=100, mu=circular(pi/3), kappa=3)
res <- plot(data.1, stack=FALSE, col=1)
points(data.2, plot.info=res, col=2)
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