Lyndon Walker wrote:
Hi,
I'm trying to get 2x2 (or other layouts) of cd_plot from the vcd package. I
have tried the usual commands like layout, par(mfrow...) etc and but cd_plot
seems to ignore them and send the plotting window back to 1x1. I have also
tried turning off the pop and newpage options in cd_plot but I still can't
get multiple cd_plots into a plotting window.
Any suggestions would be greatly appreciated.
This is because cd_plot() uses the grid framework rather than the R base
graphics system. Hence use it inside a grid viewport.
Example:
library("vcd")
pushViewport(vp <- viewport(x = 0.25, y = 0.5,
w = 0.5, h = 1))
cd_plot(Improved ~ Age, data = Arthritis, newpage=FALSE)
popViewport()
pushViewport(vp <- viewport(x = 0.75, y = 0.5,
w = 0.5, h = 1))
cd_plot(Improved ~ Age, data = Arthritis, newpage=FALSE)
popViewport()
Uwe Ligges
cheers
Lyndon
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