Thank you very much, that works fine!
I now realize that I should have looked up not only the help pages for plot and
mca but also for plot.mca, which I did not think possible (unfortunately I am a
too sporadic user to know where to get the appropriate information).
Best regards,
Michael
> -Ursprüngliche Nachricht-
> Von: Prof Brian Ripley [mailto:[EMAIL PROTECTED]
> Gesendet: Mittwoch, 31. Januar 2007 10:19
> An: Michael Reinecke
> Cc: r-help@stat.math.ethz.ch
> Betreff: Re: [R] mca-graphics: all elements overlapping in
> the help-example for multiple correspondence analysis
>
> On Wed, 31 Jan 2007, Michael Reinecke wrote:
>
> > Dear all,
> >
> > I tried out the example in the help document for mca (the
> multiple correspondence analysis of the MASS package):
> >
> > farms.mca <- mca(farms, abbrev=TRUE)
> > farms.mca
> > plot(farms.mca)
> >
> > But the graphic that I get seems unfeasible to me: I cannot
> recognize
> > the numbers (printed in black) because they are all overlapping and
> > concealing each other. I don ´t dare using my own data,
> which consist
> > of several hundred cases - I guess I won ´t see anything.
> >
> > How can I solve this? Thank you for any idea!
>
> Some levels do overplot, as they are identical (this is an
> unusual example). But as you see in the book, not many, and
> you can adjust pointsize of your device or 'cex' to mitigate
> the problem.
>
> Plotting the rows is optional: see the help page. I would
> not recommend plotting rows for several hundred cases.
>
> --
> Brian D. Ripley, [EMAIL PROTECTED]
> Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
> University of Oxford, Tel: +44 1865 272861 (self)
> 1 South Parks Road, +44 1865 272866 (PA)
> Oxford OX1 3TG, UKFax: +44 1865 272595
>
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