Re: [R] pairewise plots

From: Petr Pikal <petr.pikal_at_precheza.cz>
Date: Wed 30 Mar 2005 - 01:22:55 EST


Hallo

On 29 Mar 2005 at 6:58, Hai Lin wrote:

> Dear R users,
>
> I have a data generated as the following,
>
> dat <- data.frame(matrix(sample(24), nrow=4))
> dimnames(dat) <-list(rownames=c('g1','g2','g3','g4'),
> colnames=c("A_CH1","A_CH2","B_CH1","B_CH2","C_CH3","C_CH3"))
>
> dat
> A_CH1 A_CH2 B_CH1 B_CH2 C_CH3 C_CH3
> g1 16 24 7 9 14 20
> g2 4 10 19 22 5 17
> g3 11 18 21 12 13 1
> g4 2 3 15 6 23 8
>
> I am trying to plot them pairwise by column(might extend to more than
> 3 pairs) Instead manually plotting as below, could you please point me
> out with easier ways?
>
> par(mfrow=c(3,1))

You can use for construction

for(i in c(1,3,5)) plot(dat[,i]+dat[,i+1], dat[,i]-dat[,i+1])

but if you want x or y labels formated differently, you probably need to ad some kind of expression in xlab (ylab) parameters.

Cheers
Petr

> plot(dat$A_CH1+dat$A_CH2, dat$A_CH1-dat$A_CH2)
> plot(dat$B_CH1+dat$B_CH2, dat$B_CH1-dat$B_CH2)
> plot(dat[,5]+dat[,6], dat[,5]-dat[,6])
>
> Thanks a lot for your help
>
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Petr Pikal
petr.pikal@precheza.cz



R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Wed Mar 30 01:44:55 2005

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