arrows3d {matlib} | R Documentation |
Draw 3D arrows
Description
Draws nice 3D arrows with cone3d
s at their tips.
Usage
arrows3d(
coords,
headlength = 0.035,
head = "end",
scale = NULL,
radius = NULL,
ref.length = NULL,
draw = TRUE,
...
)
Arguments
coords |
A 2n x 3 matrix giving the start and end (x,y,z) coordinates of n arrows, in pairs. The first vector in each pair is taken as the starting coordinates of the arrow, the second as the end coordinates. |
headlength |
Length of the arrow heads, in device units |
head |
Position of the arrow head. Only |
scale |
Scale factor for base and tip of arrow head, a vector of length 3, giving relative scale factors for X, Y, Z |
radius |
radius of the base of the arrow head |
ref.length |
length of vector to be used to scale all of the arrow heads (permits drawing arrow heads of the same size as in a previous call);
if |
draw |
if |
... |
rgl arguments passed down to |
Details
This function is meant to be analogous to arrows
, but for 3D plots using rgl
.
headlength
, scale
and radius
set the length, scale factor and base radius of the arrow head, a
3D cone. The units of these are all in terms of the ranges of the current rgl 3D scene.
Value
invisibly returns the length of the vector used to scale the arrow heads
Author(s)
January Weiner, borrowed from the pca3d package, slightly modified by John Fox
See Also
Other vector diagrams:
Proj()
,
arc()
,
circle3d()
,
corner()
,
plot.regvec3d()
,
pointOnLine()
,
regvec3d()
,
vectors()
,
vectors3d()
Examples
#none yet