| grid.grill {grid} | R Documentation | 
This function draws a grill within a Grid viewport.
grid.grill(h = unit(seq(0.25, 0.75, 0.25), "npc"),
           v = unit(seq(0.25, 0.75, 0.25), "npc"),
           default.units = "npc", gp=gpar(col = "grey"), vp = NULL)
h | 
A numeric vector or unit object indicating the horizontal location of the vertical grill lines. | 
v | 
A numeric vector or unit object indicating the vertical location of the horizontal grill lines. | 
default.units | 
A string indicating the default units to use
if h or v are only given as numeric vectors. | 
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. | 
vp | 
A Grid viewport object. | 
None.
Paul Murrell