[R] Direction of panel plots in trellis graphics

Yan Wong h.y.wong at leeds.ac.uk
Fri Jul 13 20:05:01 CEST 2007

On 13 Jul 2007, at 17:11, deepayan.sarkar at gmail.com wrote:

> Another high level option is to change the rule determining how
> packets are chosen for a given panel in the layout.
> print(tmp.tr3,
>      packet.panel = function(layout, row, column, ...) {
>          layout <- layout[c(2, 1, 3)]
>          packet.panel.default(layout = layout,
>                               row = column,
>                               column = row, ...)
>      })
> This effectively transposes the layout, which (along with
> as.table=TRUE) is what you want.

Thank you Deepayan, that does exactly what I want.

Also thanks for the other suggestions by Gabor and Richard.  
Unfortunately these don't quite work in my case, as I am printing to  
multiple pages (so Richard's suggestion of transposing becomes  
tricky), and my 2 conditioning variables are on the rhs and lhs of  
the formula (i.e. y1 + y2 = x | v) (so I can't easily create a new  
combination factor as in Gabor's situation).



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