Re: [R] Types in grouped multi-panel (lattice) xyplot

From: Deepayan Sarkar <deepayan.sarkar_at_gmail.com>
Date: Thu, 10 Apr 2008 13:50:27 -0700

On 4/10/08, Deepayan Sarkar <deepayan.sarkar_at_gmail.com> wrote:
> On 4/10/08, Aaron Arvey <aarvey@cs.ucsd.edu> wrote:
> > Apologetic prologue: I've looked through the mailing list for an answer to
> > this (since I'm sure it's trivial) but I have not been able to find a fix.
> >
> > So the problem is that I want each group to have a different type of plot.
> > "Probes" should be points and "Segments" should be lines (preferably using
> > the segment plot command, but I've just been trying -- unsuccessfully --
> > to get lines to work).
> >
> > To be exact, the data looks like:
> >
> > loc val valtype mouse
> > 1428 0.1812367 Probes 2
> > 1439 -0.4534155 Probes 2
> > 1499 -0.4957303 Probes 2
> > 1559 0.2448838 Probes 2
> > 1611 -0.2030937 Probes 2
> > 1788 -0.2235331 Probes 2
> > 1428 0.5 Segment 2
> > 1439 0.5 Segment 2
> > 1499 0.5 Segment 2
> > 1559 0.5 Segment 2
> > 1611 0.5 Segment 2
> > 1788 0.5 Segment 2
> > 1428 0.1812367 Probes 1
> > 1439 -0.4534155 Probes 1
> > 1499 -0.4957303 Probes 1
> > 1559 0.2448838 Probes 1
> > 1611 -0.2030937 Probes 1
> > 1788 -0.2235331 Probes 1
> > 1428 0.5 Segment 1
> > 1439 0.5 Segment 1
> > 1499 0.5 Segment 1
> > 1559 0.1 Segment 1
> > 1611 0.1 Segment 1
> > 1788 0.1 Segment 1
> >
> >
> > * loc is the x-axis location
> > * val is the y-axis value
> > * valtype is equal to "which" had I been smart and used make.groups
> > * mouse is the 'cond' variable
> >
> >
> > The plot command I'm currently using is,
> >
> > xyplot(val ~ loc | mouse, data = df,
> > groups=valtype
> > aspect=0.5, layout=c(3,3),
> > lty=0, lwd=3, type="p",
> > col=c("black", "blue"),
> > as.table = TRUE)
> >
> > which gives me black and blue points for the probes/segments (I've infered
> > alphabetical order for the groups colors). When I change the type to
> > c("p", "l"), I get
> >
> > xyplot(val ~ loc | mouse, data = df,
> > groups=valtype
> > aspect=0.5, layout=c(3,3),
> > lty=0, lwd=3, type=c("p","l"),
> > col=c("black", "blue"),
> > as.table = TRUE)
>
>
> Try
>
>
> xyplot(val ~ loc | mouse, data = df,
>
> groups=valtype,
> type=c("p","l"),
> ## distribute.type = TRUE,

Sorry, that should be

       distribute.type = TRUE,

> col=c("black", "blue"))
>
>
> > I get the exact same plot. I've tried using a few of the panel functions
> > I found on the list (I was particularly hopeful for
> > http://tolstoy.newcastle.edu.au/R/help/06/07/30363.html) but I've either
> > been misusing them, or they are not right for what I want to do.
> >
> > If anyone knows how to get points and lines in the same panel for the two
> > different groups (probes/segments), I would love to hear about it.
> >
> > If you further know how to use the 'segment' plot in panels for the
> > segments, I would really love to hear about it.
>
>
> Well, panel.segments() draws segments, but you need your data in the
> form (x1, y1, x2, y2) for that. With your setup, it's probably easier
> to have lines with some NA-s inserted wherever you want line breaks.
>
>
> -Deepayan
>



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