[R] Rescaling columns in a multi-plot layout

[Manojit Roy]

Dear all,

I am trying to create a 6-plot layout - 3 rows and 2 columns - so that 
only the top two plots have variable widths, all else with their default 
setting. Using 
"layout(matrix(c(1,2,3,4,5,6),3,2,byrow=T),widths=c(5,2))" rescales 
column #2 of all three rows, whereas I would like to rescale that of 
only row #1. Is there a simple way of doing this?

Thanks,
Manojit