Generate grid Viewports from Base Plot

Description

This will generate a list of grid viewports which correspond to the current inner, figure, and plot regions of the current base plot.

Usage

baseViewports()

Details

The figure region is relative to the inner region so you must push the inner region before pushing the figure region. Similarly, the plot region is relative to the figure region so this should only be pushed after the previous two.

Value

A list with three elements:

Warning

If you resize the device, all bets are off!

Author(s)

Paul Murrell

See Also

Grid, viewport

Examples

library(grid)
par(oma=rep(1, 4), mfrow=c(1, 2), xpd=NA)
plot(1:10)
vps <- baseViewports()
pushViewport(vps$inner)
grid.rect(gp=gpar(lwd=3, col="red"))
pushViewport(vps$figure)
grid.rect(gp=gpar(lwd=3, col="green"))
pushViewport(vps$plot)
grid.rect(gp=gpar(lwd=3, col="blue"))
grid.points(1:10, 10:1)

Results