[R] xyplot question
Dear R users, I have a question regarding the use of xyplot in the lattice() package. I have two factors (each with two levels), and I´d like to change the order of the panels in a 2x2 panel layout from the default alphabetic order that R uses based on the names of the factor levels. My approach is (in principle) xyplot(y~x|Factor1+Factor2) Let´s assume, my factor levels for Factor1 are A and B, and for Factor2 they´re C and D, respectively. Now the default arrangement of my panels would be (from bottom top left to bottom right): BC,CA,BD,AD What I´d like to have is BD,AC,BC,AD. Can anyone tell me how to solve this problem easily? I´ve read that using perm.cond and/or index.cond could solve this problem, but couldn´t find an appropriate example, unfortunately... Thank you very much for your help! Regards, Christoph __ 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
Re: [R] xyplot question
On 12/6/05, Christoph Scherber [EMAIL PROTECTED] wrote: Dear R users, I have a question regarding the use of xyplot in the lattice() package. I have two factors (each with two levels), and I´d like to change the order of the panels in a 2x2 panel layout from the default alphabetic order that R uses based on the names of the factor levels. My approach is (in principle) xyplot(y~x|Factor1+Factor2) Let´s assume, my factor levels for Factor1 are A and B, and for Factor2 they´re C and D, respectively. Now the default arrangement of my panels would be (from bottom top left I assume you mean 'top left' to bottom right): BC,CA,BD,AD No it won't, unless you meant xyplot(y~x|Factor2+Factor1) Instead of describing your problem 'in principle' (which can be very confusing when you make a mistake), please do as the posting guide asks and give a reproducible example. Anyone trying to answer you will have to come up with an example anyway, and since it's your problem, it might as well be you. What I´d like to have is BD,AC,BC,AD. This is impossible if you have two conditioning factors (whichever way you count, the combination following BD has to have at least one of B and D in it). If you want to lose the 2-factor structure, create an interaction, after which you can reorder its levels any way you want, e.g. d - data.frame(f1 = sample(gl(2, 10, labels = LETTERS[1:2])), f2 = sample(gl(2, 10, labels = LETTERS[3:4])), x = rnorm(20), y = rnorm(20)) xyplot(y ~ x | f1:f2, d)[c(1, 2, 4, 3)] which is a shortcut for xyplot(y ~ x | f1:f2, d, index.cond = list(c(1, 2, 4, 3))) -Deepayan Can anyone tell me how to solve this problem easily? I´ve read that using perm.cond and/or index.cond could solve this problem, but couldn´t find an appropriate example, unfortunately... __ 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
[R] xyplot() question
Dear R Users,
I have an xyplot() where different plotting symbols are used for
subgroups (originally used within S-Plus, but hopefully it´s also
applicable to R users).
How can I fit separate regression lines for every subgroup? So far, I
can only plot the overall fitted line.
The code looks like this:
trellis.device()
sps-trellis.par.get(superpose.symbol)
sps$pch-1:7
trellis.par.set(superpose.symbol,sps)
spl - trellis.par.get(superpose.line)
ps$lty - 1:7
trellis.par.set(superpose.line,spl)
xyplot(a~b|factor+treatment,
groups=external,data=ownframe,layout=c(2,2),
panel=function(x,y,subscripts,...){panel.superpose(x,y,subscripts,...);panel.lmline(x,y)})
Thank you very much for your help!
Regards
Christioph
__
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
Re: [R] xyplot() question
On Thursday 10 February 2005 09:34, Christoph Scherber wrote:
Dear R Users,
I have an xyplot() where different plotting symbols are used for
subgroups (originally used within S-Plus, but hopefully it´s also
applicable to R users).
How can I fit separate regression lines for every subgroup? So far,
I can only plot the overall fitted line.
The code looks like this:
trellis.device()
sps-trellis.par.get(superpose.symbol)
sps$pch-1:7
trellis.par.set(superpose.symbol,sps)
spl - trellis.par.get(superpose.line)
ps$lty - 1:7
trellis.par.set(superpose.line,spl)
xyplot(a~b|factor+treatment,
groups=external,data=ownframe,layout=c(2,2),
panel=function(x,y,subscripts,...){panel.superpose(x,y,subscripts,...
);panel.lmline(x,y)})
xyplot(a~b|factor+treatment,
groups=external,data=ownframe,layout=c(2,2),
panel.groups=function(x,y,...){
panel.xyplot(x,y,...)
panel.lmline(x,y,...)
})
or
xyplot(a~b|factor+treatment,
groups=external,data=ownframe,layout=c(2,2),
type = c('p', 'r'))
Deepayan
__
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
