grid.frame {grid}R Documentation

Create a Frame for Packing Objects


These functions, together with grid.pack,, packGrob, and placeGrob are part of a GUI-builder-like interface to constructing graphical images. The idea is that you create a frame with this function then use grid.pack or whatever to pack/place objects into the frame.


grid.frame(layout=NULL, name=NULL, gp=gpar(), vp=NULL, draw=TRUE)
frameGrob(layout=NULL, name=NULL, gp=gpar(), vp=NULL)


layout A Grid layout, or NULL. This can be used to initialise the frame with a number of rows and columns, with initial widths and heights, etc.
name A character identifier.
vp An object of class viewport, or NULL.
gp An object of class gpar; typically the output from a call to the function gpar.
draw Should the frame be drawn.


Both functions create a frame grob (a graphical object describing a frame), but only grid.frame() draws the frame (and then only if draw is TRUE). Nothing will actually be drawn, but it will put the frame on the display list, which means that the output will be dynamically updated as objects are packed into the frame. Possibly useful for debugging.


A frame grob. grid.frame() returns the value invisibly.


Paul Murrell

See Also



grid.frame(name="gf", draw=TRUE)
grid.pack("gf", rectGrob(gp=gpar(fill="grey")), width=unit(1, "null"))
grid.pack("gf", textGrob("hi there"), side="right")

[Package grid version 2.2.1 Index]