Re: [Rd] error in plot.dendrogram (PR#7300)

From: Martin Maechler <maechler_at_stat.math.ethz.ch>
Date: Fri 22 Oct 2004 - 00:12:47 EST

>>>>> "Eryk" == Eryk Wolski <wolski@molgen.mpg.de>
>>>>> on Thu, 21 Oct 2004 13:41:29 +0200 (CEST) writes:

    Eryk> Hi,

    Eryk> hres <- hclust(smatr,method="single")
    Eryk> hresd<-as.dendrogram(hres)
    Eryk> as.dendrogram(hres)
    Eryk> `dendrogram' with 2 branches and 380 members total, at height 2514.513 
    Eryk> plot(hresd,leaflab="none") #<-error here.

definitely no error here.. maybe your graphic window is too small or otherwise unable to show all the leaf labels?

    Eryk> #the plotted dendrogram is incomplete. The x axis is not drawn.

ha! and why should this be a bug????
Have you RTFHP and looked at its example?? There's never an x-axis in such a plot!

[You really don't want an x-axis overlayed over all the labels]

    Eryk> #The interested reader can download the

    Eryk> save(hresd,file="hres.rda")

    Eryk> #from the following loacation
    Eryk> www.molgen.mpg.de/~wolski/hres.rda

If you send a bug report (and please rather don't..), it should be reproducible, i.e., I've just wasted my time for

dFile <- "/u/maechler/R/MM/Pkg-ex/stats/wolski-hres.rda" if(!file.exists(dFile))

    download.file(url ="http://www.molgen.mpg.de/~wolski/hres.rda", dest= dFile) load(dFile)
hresd
plot(hresd)


If you look at this plot I hope you rather see that "single" has been an extremly unuseful clustering method for this data / dissimilarities, and you'd rather tried other methods than to which for an x-axis.

If you really want one (just to see that it doesn't make sense), you can always add

    axis(1, fg = "red")

Martin



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https://stat.ethz.ch/mailman/listinfo/r-devel Received on Fri Oct 22 06:21:33 2004

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