Re: [R] Adding text to strip in xYplot

From: John Poulsen <jpoulsen_at_zoo.ufl.edu>
Date: Wed, 09 Apr 2008 13:56:00 -0400

Hello Christoph,

Oops, I see that the factor.levels function is in the help menu for strip.default. I had tried it, but not specified it correctly.

Thanks again for you help,
John

Christoph Meyer wrote:
> Hi John,
>
> a solution to your problem would be using strip.custom like this:
>
> ...
> with(dat,xYplot(Cbind(ycomb, y.up, y.low)~x1|factor(grp),
> data=dat,type="l", method="bands",
> scales=list(y=list(relation="free"),x=list(alternating=c(1,1,1))),
> ylim=list(c(0,1200),c(0,10000)),
> strip=strip.custom(factor.levels=c(expression("Anls km"^2),expression("Plants km"^2)))))
>
> Best wishes,
> Christoph
>
>
> Wednesday, April 9, 2008, 2:39:09 PM, you wrote:
>
>> Hello again,
>
>> I have been trying to add an expression to the strips in xYplot to no
>> avail. For example, in the code below, the text in the strips for each
>> panel is "Anls" and "Plts". However, I would like it to add "Anls km^2"
>> and "Plants km^2" with the exponents raised.
>
>> I tried resetting the name of my groups in the dataframe before
>> plotting, but the dataframe only recognized the entire expression (e.g.
>> expression(paste("Anls", km^2,sep=" ")) and not Anls km2 - which should
>> not have surprised me.
>
>> Any ideas? Thanks for any help you can provide.
>
>> John
>
>> x1=rseq(1,30,0.5)
>> y1=x1^2
>> y2=10*(x1^2)
>> ycomb=c(y1,y2)
>> y.up=ycomb+0.1*ycomb
>> y.low=ycomb-0.1*ycomb
>> grp=rep(c("Anls","Plts"),each=length(x1)))
>> dat=as.data.frame(cbind(ycomb, y.up, y.low, rep(x1,2)),stringsAsFactors=F)
>> colnames(dat)=c("ycomb","y.up","y.low","x1")
>
>> with(dat,xYplot(Cbind(ycomb, y.up, y.low)~x1|factor(grp),
>> data=dat,type="l", method="bands",
>> scales=list(y=list(relation="free"),
>>
>> x=list(alternating=c(1,1,1))),ylim=list(c(0,1200),c(0,10000))))
>
>> ______________________________________________
>> R-help_at_r-project.org mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-help
>> PLEASE do read the posting guide
>> http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>
>
>
> ***************************************************************
> Dr. Christoph Meyer
> Institute of Experimental Ecology
> University of Ulm
> Albert-Einstein-Allee 11
> D-89069 Ulm
> Germany
> Phone: ++49-(0)731-502-2675
> Fax: ++49-(0)731-502-2683
> Mobile: ++49-(0)1577-156-7049
> E-mail: christoph.meyer_at_uni-ulm.de
> http://www.uni-ulm.de/nawi/nawi-bio3.html
> ***************************************************************
>
>
>



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