Hi,

I'm sure this is pretty straightforward, but I cant seem to figure it

out after playing around with grid, and a number of other packages for

graphing

I have data of the following type (much larger of course, and in this

case is named "Medoid4"). The first column defines the x-axis, while

as each other column is individual y-axes in different plots

gene1 gene2 gene3

4 -0.74 -0.63 -0.12

8 3.2 0.3 0.98

12 0.35 0.59 0.22

14 0.22 0.62 -0.2

and I'm graphing simple line plots using the following commands.

par(mfrow=c(5,2), mai=c(0.7,0.3,0.2,0.2), omi=c(0.5,0.5,0.5,0.5))

for(i in 2:ncol(Medoid4)){

plot(Medoid4[,1], Medoid4[,i], type="b", col="red",

xlab = names(Medoid4)[i],font=2, ylab = "")}

I want to draw a simple box over each of the plots, transparent and

colored to highlight specific portions of each plot (the same portion

in each plot which is defined from the days old in the first column).

I dont mind manually tweaking it initially, my problem is getting a

box on the plots in the first place, which I have had no luck doing.

Please help!

thanks

Simon.

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