[R] graphics

[Federico Calboli]

Dear R community,

I need to plot the results of some simulations I did using QTL
Cartographer. I am plotting LOD scores over three chromosomes. The three
plot have to be one next to the other. 

The procedure I am using is:

par(mfrow=c(1,3))
plot(x$x, x$y, ylim=c(0,35), type="l", col="blue", las=1, xaxs="i",
yaxs="i", xlab="X Chromosome", ylab="LOD")
abline(h=3.055)

plot(ch2$x, ch2$y, ylim=c(0,35), type="l", col="blue", yaxt="n", xaxs="i",
yaxs="i", xlab="Chromosome 2", ylab="")
abline(h=3.055)

plot(ch3$x, ch3$y, ylim=c(0,35), type="l", col="blue", yaxt="n", xaxs="i",
yaxs="i", xlab="Chromosome 3", ylab="")
abline(h=3.055)

This works fine but I would like to improve it a bit. I would like the same
scaling along the x axis so that the plot for longer chromosomes and
shorter ones looks "in scale". Second thing, I'd like to have the three
plots much closer together, the space between plots given by mfrow at the
moment is far too much.

Regards,

Federico Calboli
 

=========================

Federico C.F. Calboli

Department of Biology
University College London
Room 327
Darwin Building
Gower Street
London
WClE 6BT

Tel: (+44) 020 7679 4395 
Fax (+44) 020 7679 7096
f.calboli at ucl.ac.uk