[R] Plotting text with lattice

[Ritwik Sinha]

Hi,

On a related note, if I wanted to add different texts to different
panels, should I stick to using trellis.focus() for each text in each
panel? I cannot figure out a way to do it using a panel function.

Ritwik.

On 9/29/06, Deepayan Sarkar <deepayan.sarkar at gmail.com> wrote:
> On 9/29/06, Gabor Grothendieck <ggrothendieck at gmail.com> wrote:
> > Here are two possibilities.  The first use trellis.focus/trellis/unfocus to
> > add text subsequent to drawing the xyplot and the second uses a
> > custom panel:
> >
> > xyplot(x ~ x, data = data.frame(x = 1:10))
> > trellis.focus("panel", 1, 1)
> > panel.text(x=2, y=4, labels="Text")
> > trellis.unfocus()
> >
> > xyplot(x ~ x, data = data.frame(x = 1:10), panel = function(...) {
> >         panel.xyplot(...)
> >         panel.text(x=2, y=4, labels="Text")
> > })
>
> Right, on a more general note, this is necessary because it is not clear what
>
> ltext(x=2, y=4, labels="Text")
>
> should do for a multi-panel plot. On an even more general note, you
> will keep getting in trouble when using lattice if you (1) try to
> follow the "incremental addition" approach of standard graphics or (2)
> use the par() system in any way.
>
> Deepayan
>
> > On 9/29/06, McGehee, Robert <Robert.McGehee at geodecapital.com> wrote:
> > > Hello,
> > > I've decided to take the leap and try my hand at the lattice package,
> > > though I am getting stuck at what one might consider a trivial problem,
> > > plotting text at a point in a graph. Apologies in advance if (that) I'm
> > > missing something extremely basic.
> > >
> > > Consider in base graphics:
> > > > plot(1:10)
> > > > text(2, 4, "Text")
> > > In the above you will see text centered at the point (2, 4) on the
> > > graph.
> > >
> > > Now I would like to try to do the same thing using the lattice package:
> > >
> > > > xyplot(x ~ x, data = data.frame(x = 1:10))
> > > > ltext(x=2, y=4, labels="Text")
> > > > panel.text(x=2, y=4, labels="Text")
> > > > grid.text(label="Text", x=2, y=4)
> > > > grid.text(label="Text", x=unit(2, "native"), y=unit(4, "native"))
> > >
> > > None of the above four commands puts the "Text" at the (2, 4) point on
> > > the graph. Any help with this would be appreciated! Also, if I have more
> > > than one panel and would like to place text at different points on
> > > different panels how would I do this?
> > >
> > > Also, note that I'm hoping to use text to label interesting points in a
> > > levelplot, but am using the above xyplot as an example.
> > >
> > > Thanks,
> > > Robert
> > >
> > >
> > > Robert McGehee
> > > Quantitative Analyst
> > > Geode Capital Management, LLC
> > > 53 State Street, 5th Floor | Boston, MA | 02109
> > > Tel: 617/392-8396    Fax:617/476-6389
> > > mailto:robert.mcgehee at geodecapital.com
> > >
> > >
> > >
> > > This e-mail, and any attachments hereto, are intended for us...{{dropped}}
> > >
> > > ______________________________________________
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> > > https://stat.ethz.ch/mailman/listinfo/r-help
> > > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> > > and provide commented, minimal, self-contained, reproducible code.
> > >
> >
> > ______________________________________________
> > R-help at stat.math.ethz.ch mailing list
> > https://stat.ethz.ch/mailman/listinfo/r-help
> > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> > and provide commented, minimal, self-contained, reproducible code.
> >
>
>
> --
> http://www.stat.wisc.edu/~deepayan/
>
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>


-- 
Ritwik Sinha
Graduate Student
Epidemiology and Biostatistics
Case Western Reserve University
ritwik.sinha at gmail.com | +12163682366 | http://darwin.cwru.edu/~rsinha