[Rd] legend() in a multiple figure environment
Simone Giannerini
sgiannerini at gmail.com
Thu Jan 8 16:59:50 CET 2009
Thanks for your clarifications,
I use legends only when the plot is at its final size and also had a
look at windows() before posting but at first I could not relate the
legends' behaviour to the resizing effect.
Kind regards,
Simone
On Thu, Jan 8, 2009 at 4:02 PM, Prof Brian Ripley <ripley at stats.ox.ac.uk> wrote:
> On Thu, 8 Jan 2009, Simone Giannerini wrote:
>
>> Now I got how to reproduce it, it has nothing to do with multiple
>> figure environment but rather with figure resizing. Here it is:
>>
>> curve(dnorm,col=4,from=-4,to=4);
>> legend(-4,0.3,legend="curve",lty=1,col=4)
>>
>> # Now expand the figure to full screen
>>
>> legend(-4,0.2,legend="curve",lty=1,col=4)
>
> When you resize graphics, text stays the same size (on most devices) and
> vector graphics does not. You can't expect the figure to be recomputed when
> you resize (and if you expect so, your expectations will be unfufilled).
> All that happens is that a low-level description is replayed.
>
> The windows() device does give you more options on resize.
>
>>
>> Simone
>>
>> On Thu, Jan 8, 2009 at 2:39 PM, Martin Maechler
>> <maechler at stat.math.ethz.ch> wrote:
>>>
>>>>>>>> "SG" == Simone Giannerini <sgiannerini at gmail.com>
>>>>>>>> on Thu, 8 Jan 2009 14:08:17 +0100 writes:
>>>
>>> SG> Dear Mathieu, On Thu, Jan 8, 2009 at 12:14 PM, Mathieu
>>> SG> Ribatet <mathieu.ribatet at epfl.ch> wrote:
>>> >> Dear Simone,
>>> >>
>>> >> Did mean that the legend (text and/or box) overlap with
>>> >> the Normal density?
>>>
>>> SG> no, I mean that the two legend() commands, which are
>>> SG> identical in all but the y-coordinates, produce
>>> SG> different results, namely boxes with different widths.
>>>
>>> I don't see that behavior at all, rather the two boxes have
>>> identical dimensions for me.
>>>
>>> What does dev.cur() say? if anything with "X11..." (as you are
>>> on Linux), what does
>>>
>>> str(X11.options())
>>>
>>> give?
>>>
>>>
>>> SG> Ciao
>>>
>>> SG> Simone
>>>
>>> >> If so then I think there's no problem as the legend is
>>> >> placed where you told R to do. And R won't check (for
>>> >> you) if it will overlap or not with pre-existing
>>> >> graphical elements.
>>> >>
>>> >> On my computer, I got the expected results - if I
>>> >> understood correctly your issue though. For information:
>>> >>
>>> >> R version 2.8.1 (2008-12-22) Linux mathieu-laptop
>>> >> 2.6.27-11-generic #1 SMP Fri Dec 19 16:29:52 UTC 2008
>>> >> i686 GNU/Linux (Ubuntu Intrepid)
>>> >>
>>> >> Cheers, Mathieu
>>> >>
>>> >> Simone Giannerini a écrit :
>>> >>>
>>> >>> Dear all,
>>> >>>
>>> >>> there seems to be a problem with displayed legends when
>>> >>> a multiple figure environment is used, see the following
>>> >>> example:
>>> >>>
>>> >>> par(mfrow=c(1,2)) curve(dnorm,col=4,from=-4,to=4);
>>> >>> legend(-4,0.3,legend="curve",lty=1,col=4)
>>> >>> legend(-4,0.2,legend="curve",lty=1,col=4)
>>> >>>
>>> >>>
>>> >>> On my machines the first time the command legend() is
>>> >>> issued the legend box stretches over the
>>> >>> curve. Subsequent calls to legend seems to produce a
>>> >>> correct box instead.
>>> >>>
>>> >>> openSuse 11.0
>>> >>>
>>> >>> platform x86_64-unknown-linux-gnu arch x86_64 os
>>> >>> linux-gnu system x86_64, linux-gnu status Patched major
>>> >>> 2 minor 8.1 year 2009 month 01 day 07 svn rev 47501
>>> >>> language R version.string R version 2.8.1 Patched
>>> >>> (2009-01-07 r47501)
>>> >>>
>>> >>> I see this on the same version of R on Windows VISTA 32
>>> >>> bit as well; I do not see this behaviour on a machine
>>> >>> with R 2.8.0.
>>> >>>
>>> >>> Thank you,
>>> >>>
>>> >>> Simone
>>> >>> --
>>> >>> ______________________________________________________
>>> >>>
>>> >>> Simone Giannerini Dipartimento di Scienze Statistiche
>>> >>> "Paolo Fortunati" Universita' di Bologna Via delle belle
>>> >>> arti 41 - 40126 Bologna, ITALY Tel: +39 051 2098262 Fax:
>>> >>> +39 051 232153 http://www2.stat.unibo.it/giannerini/
>>> >>>
>>> >>> ______________________________________________
>>> >>> R-devel at r-project.org mailing list
>>> >>> https://stat.ethz.ch/mailman/listinfo/r-devel
>>> >>>
>>> >>
>>>>
>>>> --
>>>> Institute of Mathematics Ecole Polytechnique Fédérale de
>>>
>>> >> Lausanne STAT-IMA-FSB-EPFL, Station 8 CH-1015 Lausanne
>>> >> Switzerland http://stat.epfl.ch/ Tel: + 41 (0)21 693 7907
>>> >>
>>> >>
>>> >>
>>>
>>>
>>>
>>> --
>>> ______________________________________________________
>>>
>>> SG> Simone Giannerini Dipartimento di Scienze Statistiche
>>> SG> "Paolo Fortunati" Universita' di Bologna Via delle belle
>>> SG> arti 41 - 40126 Bologna, ITALY Tel: +39 051 2098262 Fax:
>>> SG> +39 051 232153 http://www2.stat.unibo.it/giannerini/
>>>
>>> SG> ______________________________________________
>>> SG> R-devel at r-project.org mailing list
>>> SG> https://stat.ethz.ch/mailman/listinfo/r-devel
>>
>>
>>
>> --
>> ______________________________________________________
>>
>> Simone Giannerini
>> Dipartimento di Scienze Statistiche "Paolo Fortunati"
>> Universita' di Bologna
>> Via delle belle arti 41 - 40126 Bologna, ITALY
>> Tel: +39 051 2098262 Fax: +39 051 232153
>> http://www2.stat.unibo.it/giannerini/
>>
>> ______________________________________________
>> R-devel at r-project.org mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-devel
>>
>
> --
> Brian D. Ripley, ripley at stats.ox.ac.uk
> 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, UK Fax: +44 1865 272595
--
______________________________________________________
Simone Giannerini
Dipartimento di Scienze Statistiche "Paolo Fortunati"
Universita' di Bologna
Via delle belle arti 41 - 40126 Bologna, ITALY
Tel: +39 051 2098262 Fax: +39 051 232153
http://www2.stat.unibo.it/giannerini/
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