AgEdge-class: Class "AgEdge": A class to describe an edge for a Ragraph object

Description

This class is used to represent edges for the Ragraph class. One can retrieve various pieces of information as well as draw them.

Arguments

Objects from the Class

Objects can be created by calls of the form new("AgEdge", ...).

Slots

arrowhead:: Object of class "character" The style of arrowhead for this edge.
arrowsize:: Object of class "character" A scale factor for the length of the arrow heads & tails
arrowtail:: Object of class "character" The style of arrowtail for this edge.
color:: Object of class "character" The edge color.
dir:: Object of class "character" The edge direction.
ep:: Object of class "xyPoint" The end point of the edge.
head:: Object of class "character" The head node for this edge.
lty:: Object of class "character" The edge line type.
lwd:: Object of class "numeric" The edge line width.
sp:: Object of class "xyPoint" The starting point of the edge.
splines:: Object of class "list" A list of BezierCurve objects
tail:: Object of class "character" The tail node for this edge.
txtLabel:: Object of class "character" The edge text label.

Methods

splines: Returns the splines slot
sp: Returns the sp slot
ep: Returns the ep slot
numSplines: Returns the number of splines
getSpline: Convenience method to retrieve a specific spline
show: Displays a concise description of the object
lines: Draws the edge
head: Gets the head slot
tail: Gets the tail slot
txtLabel: Returns any label for this edge
arrowhead: Retrieves the arrowhead slot.
arrowtail: Retrieves the arrowtail slot.
arrowsize: Retrieves the arrowsize slot.

Examples

Run this code

V <- letters[1:10]
M <- 1:4
g1 <- randomGraph(V, M, .2)
z <- agopen(g1,name="foo")
x <- AgEdge(z)  ## list of AgEdge objects

vv <- x[[1]]
vv
## Demonstrate the methods of this class
splines(vv)
sp(vv)
ep(vv)
numSplines(vv)
getSpline(vv, 1)
head(vv)
tail(vv)
txtLabel(vv)
arrowhead(vv)
arrowtail(vv)
arrowsize(vv)

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