Hi Edzer,


Thanks for your answer.

stplot(ciotat.t) gives a good result:
http://www.imagup.com/data/1128936911.html

It represents evolution of urbanization along time, each point being the
date and location of the first building for the city "La Ciotat".

The object is irregular because each spatial location appears one time. I'd
like to overlay the city contour of "La Ciotat" to better vizualize it.
http://data.imagup.com/10/1128936911.png

I've sent on your email my STIDF object ciotat.t and my SpatialLines object
contour I want to be overlaid, if you have some time to look after it.

Thanks a lot,


Mathieu

2011/8/25 Edzer Pebesma <edzer.pebesma@uni-muenster.de>

> Hi Mathieu,
>
> the idea behind stplot is indeed that it should be as easy as spplot,
> hence its name. This idea is however much easier than practice, as the
> number of possible (and useful) plots for S/T data might be quite large.
>
> I would be helpful if you could provide (or generate) a simple data set
> of your type (STIDF), explain what it represents, and tell how you'd
> want it to be plotted. Does stplot(ciotat.t) give what you want, i.e. is
> passing the sp.layout the only problem?
>
> Best regards,
> --
> Edzer
>
>
> On 08/25/2011 10:12 AM, Mathieu Rajerison wrote:
> > Hi,
> >
> >
> > I have a STIDF points object named ciotat.t that I've tried to plot with
> a
> > city contour named contour.
> >
> > I tried this but it doesn't work:
> >> stplot(ciotat.t, sp.layout= list("sp.lines", contour))
> >
> > Also, this doesn't work:
> >> stplot(ciotat.t, panel=function(...) {
> >    sp.lines(contour)
> >    panel.pointsplot(...)
> >  })
> >
> > I thought it was as easy as with spplot.The documentation tells that
> > arguments are passed on to spplot in case of stplot.STFDF, and to xyplot
> in
> > case of
> > stplot.STIDF. So, the method may be a little different in my case
> (STIDF)?
> >
> > Any help would be appreciated,
> >
> > Mathieu
> >
> >       [[alternative HTML version deleted]]
> >
> > _______________________________________________
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> > R-sig-Geo@r-project.org
> > https://stat.ethz.ch/mailman/listinfo/r-sig-geo
>
> --
> Edzer Pebesma
> Institute for Geoinformatics (ifgi), University of Münster
> Weseler Straße 253, 48151 Münster, Germany. Phone: +49 251
> 8333081, Fax: +49 251 8339763  http://ifgi.uni-muenster.de
> http://www.52north.org/geostatistics      e.pebesma@wwu.de
>
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>

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