Panels order in lattice graphs

On Wed, May 4, 2011 at 9:20 PM, Cristina Silva<csilva at ipimar.pt>  wrote:

Hi all,

In lattice graphs, panels are drawn from left to right and bottom to top.
The flag "as.table=TRUE" changes to left to right and top to bottom. Is
there any way to change to first top to bottom and then left to right?
didn?t find anything neither in Help pages nor Lattice book.

See ?packet.panel.default. For example,


p<- xyplot(mpg ~ disp | factor(carb), mtcars, as.table = TRUE)

print(p, packet.panel = packet.panel.default)

my.packet.panel<-
     function(layout, condlevels, page, row, column, ...)
{
     tlayout<- layout[c(2, 1, 3)] # switch row and column
     print(packet.panel.default(tlayout, condlevels, page = page,
                                row = column, column = row, ...))
}

print(p, packet.panel = my.packet.panel)


-Deepayan