Bonjour, Nicolas
par('usr') is read-only (see '?par')
That makes sense: user coordinates come from what you have plotted.
Would you show us an example of what exactly you want to do?
Christophe
--
Christophe Declercq, MD
Observatoire régional de la santé Nord-Pas-de-Calais
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> -----Message d'origine-----
> De : [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] la part de Nicolas STRANSKY
> Envoyé : jeudi 3 juin 2004 11:36
> À : [EMAIL PROTECTED]
> Objet : [R] Problem with par("usr")
>
>
> Hi,
>
> I'm trying to use the "usr" argument but I see no effect of this option
> on my plots. For example:
>
> > par(usr=c(0,4,0,4))
> > plot(1,1)
>
> This plots one point fine, but the coordinates of the plotting region
> are not those that I specified using par()...
> I can check this with
> > par("usr")
> [1] 0.568 1.432 0.568 1.432
>
> What can I change in order to have this "usr" argument working ?
>
> The aim of all this is to be able to superpose two plots where xlim and
> ylim arguments are not sufficient for having the same scalings...
>
> Thanks for your help.
> --
> Nicolas STRANSKY
> Équipe Oncologie Moléculaire
> Institut Curie - UMR 144 - CNRS Tel : +33 1 42 34 63 40
> 26, rue d'Ulm - 75248 Paris Cedex 5 - FRANCE Fax : +33 1 42 34 63 49
>
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