grid.collection {grid} | R Documentation |
This function creates a graphical object which contains several other graphical objects. When it is drawn, it draws all of its children.
It may be convenient to name the elements of the collection.
grid.collection(..., gp=gpar(), draw=T, vp=NULL)
... |
Zero or more objects of class "grob" . |
gp |
An object of class gpar , typically the output
from a call to the function gpar . This is basically
a list of graphical parameter settings. |
draw |
A logical value to indicate whether to produce graphical output. |
vp |
A Grid viewport object (or NULL). |
An object of class "grob"
containing a list structure
of class "collection"
.
Paul Murrell
grid.newpage() lc <- grid.collection(l1=grid.lines(draw=FALSE), l2=grid.lines(c(.5, .5), draw=FALSE)) grid.edit(lc, gp=gpar(col="blue")) grid.edit(lc, "children", "l2", gp=gpar(col="red"))