| gplot3d.arrow {sna} | R Documentation | 
Add Arrows a Three-Dimensional Plot
Description
gplot3d.arrow draws an arrow between two pairs of points.
Usage
gplot3d.arrow(a, b, radius, color = "white", alpha = 1)
Arguments
a | 
 a vector or three-column matrix containing origin X,Y,Z coordinates.  | 
b | 
 a vector or three-column matrix containing origin X,Y,Z coordinates.  | 
radius | 
 the arrow radius, in current plotting units. May be a vector, if multiple arrows are to be drawn.  | 
color | 
 the arrow color. May be a vector, if multiple arrows are being drawn.  | 
alpha | 
 alpha (transparency) value(s) for arrows. (May be a vector.)  | 
Details
gplot3d.arrow draws one or more three-dimensional “arrows” from the points given in a to those given in b.  Note that the “arrows” are really cones, narrowing in the direction of the destination point.  
Value
None.
Author(s)
Carter T. Butts buttsc@uci.edu
See Also
[Package sna version 2.7-2 Index]