From: Cornelis de Gier <cwdegier_at_gmail.com>

Date: Fri, 29 Feb 2008 18:12:44 +0100

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. Received on Fri 29 Feb 2008 - 17:15:00 GMT

Date: Fri, 29 Feb 2008 18:12:44 +0100

I'm looking for an answer to a similar question:

years <- as.factor(sort(rep(1987:2006,20)))
values <- rnorm(1:400,0,10)

plot(years,values)

results in 20 boxplots with x axis labels unreadable because there are too many of them. How do I reduce the number of x axis labels?

Regards,

Cornelis

2008/1/7, Jeff D. Hamann <jeff.hamann_at_forestinformatics.com>:

> I apologize if this is somewhere in the archives, but I can't seem to find

*> a solution to this question.
**>
**> I've been trying to plot a bwplot:
**>
**> print(
**> bwplot( n.pareto ~ as.factor(gen) | mut.rate * n.pop,
**> data=p6,
**> horizontal=FALSE,
**> box.ratio=0.75,
**> cex=0.6,
**> xlim=c(-1,51),
**> ylim=c(-1,500),
**> layout=c(3,3),
**> index.cond=list(c(1,2,3),c(3,2,1)),
**> panel = function(...) {
**> panel.grid(v = -1, h = -1)
**> cex=0.05
**> panel.bwplot(...)
**> panel.abline(h=486,lty=2)
**> },
**> main="Non-dominated Pareto Optimal Solutions",
**> ylab="Non-dominated Solutions in the Pareto Archive",
**> xlab="Generation" )
**> )
**>
**> which works "fine", but... I have tried almost every combination of
**> pertinent arguments for reducing the number of ticks/lables while still
**> plotting all the boxes in each panel. The levels of "gen" are:
**>
**> > levels( as.factor(p6$gen ))
**> [1] "20" "40" "60" "80" "100" "120" "140" "160"
**> [9] "180" "200" "220" "240" "260" "280" "300" "320"
**> [17] "340" "360" "380" "400" "420" "440" "460" "480"
**> [25] "500" "520" "540" "560" "580" "600" "620" "640"
**> [33] "660" "680" "700" "720" "740" "760" "780" "800"
**> [41] "820" "840" "860" "880" "900" "920" "940" "960"
**> [49] "980" "1000"
**> >
**>
**> which creates a "smear" of labels across the x axis. My problem is that I
**> would like to only print five or 10 of the labels (i.e.
**> 20,100,200,...,900) or something to make the labels readable and still
**> plot all the boxes in each panel.
**>
**> Is there something I'm missing as a result conditioning on two factors. I
**> feel like such a newbie about this... ugh... Any hints, please?
**>
**> Thanks,
**> Jeff.
**>
**> --
**> Forest Informatics, Inc.
**> PO Box 1421
**> Corvallis, Oregon 97339-1421
**>
**> ______________________________________________
**> 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.
**>
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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. Received on Fri 29 Feb 2008 - 17:15:00 GMT

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