grid (version 3.2.5)

grid.segments: Draw Line Segments

Description

These functions create and draw line segments.

Usage

grid.segments(x0 = unit(0, "npc"), y0 = unit(0, "npc"), x1 = unit(1, "npc"), y1 = unit(1, "npc"), default.units = "npc", arrow = NULL, name = NULL, gp = gpar(), draw = TRUE, vp = NULL) segmentsGrob(x0 = unit(0, "npc"), y0 = unit(0, "npc"), x1 = unit(1, "npc"), y1 = unit(1, "npc"), default.units = "npc", arrow = NULL, name = NULL, gp = gpar(), vp = NULL)

Arguments

x0
Numeric indicating the starting x-values of the line segments.
y0
Numeric indicating the starting y-values of the line segments.
x1
Numeric indicating the stopping x-values of the line segments.
y1
Numeric indicating the stopping y-values of the line segments.
default.units
A string.
arrow
A list describing arrow heads to place at either end of the line segments, as produced by the arrow function.
name
A character identifier.
gp
An object of class gpar.
draw
A logical value indicating whether graphics output should be produced.
vp
A Grid viewport object (or NULL).

Value

A segments grob. grid.segments returns the value invisibly.

Details

Both functions create a segments grob (a graphical object describing segments), but only grid.segments draws the segments (and then only if draw is TRUE).

See Also

Grid, viewport, arrow