[R] scientific vs. fixed notation in xyplot()

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Hi I am using xyplot() to plot on the log scale by using scale=list(log=T) 
argument. For example:

xyplot(1:10~1:10, scales=list(log=T))

But the axis labels are printed as scientific notation (10^0.0, etc), instead of 
fixed notation. How can I change that to fixed notation?

options(scipen=4) doesn't work on xyplot()

Thanks

John