Panel grob Construct grob for single panel.
ddpanelGrob(panel, axislocation = c(0.1, 0.1), axis.gp = gpar(col =
"black"), background.color = "grey90")
describe display object
color of in the background of the plot
location, x and y position
frame grob containing all panels, note that this does not contain the title or border
Hadley Wickham h.wickham@gmail.com