[R] superimposing different plot types in lattice panel.superpose

[Dennis Murphy]

Hi:

Here's one way out, if I read your intention properly...

plot1 <- xyplot(y ~ x, data = modelresults, groups = model, type = 'l',
                        xlim = c(0, 10), ylim = c(0.5, 3.5))
plot2 <- xyplot(y ~ x, data = data, groups = model, type = 'p',
                        pch = 16, xlim = c(0, 10), ylim = c(0.5, 3.5))
plot1 + plot2

You might need latticeExtra to combine the plots (??); I had it loaded
with lattice when I did the plot.

HTH,
Dennis

On Sun, Jul 3, 2011 at 6:52 PM, genghis <jcpayne at uw.edu> wrote:
> I would like to plot 3 best-fit models in a single panel of a lattice plot,
> superimposed on 3 corresponding datasets in the same panel.  My goal is to
> show the models as lines of 3 different colors, and the data as points whose
> colors correspond to the model colors.  In essence, I have two levels of
> grouping: 1) model vs. data, and 2) model number.  Since there is only one
> “groups” variable, I have tried to deal with the additional grouping level
> by subsetting the data inside a custom panel function (basically a hack),
> but something about the way parameters are passed in panel.superpose (I
> think) is making it hard to show both points and lines.
>
> My question is very similar to a previous post:
> http://www.ask.com/web?q=r%20panel.superpose%20bwplot%20sim%20actual&o=15527&l=dis&prt=NIS&chn=retail&geo=US&ver=18
> , but the questioner in that case was using bwplot, which automatically
> makes a separate plot for every level of the categorical variable, so they
> didn’t face the two-level grouping problem, and I have been unable to figure
> out how to adapt their answer.  Another approach I tried was to put my model
> function inside of my custom panel function so that the analysis occurred
> there, but I couldn’t get it to subset the x and y data appropriately.
>
> In the toy problem below I want to plot each inverted V (“model”) as LINES,
> with a single POINT (“data”) in the center of each inverted V, the same
> color as the inverted V.  The code runs, but I can’t seem to mix lines and
> points.  In my real problem (stable isotopes with ellipses superimposed on
> data) there will be additional panels but I am creating only one panel here,
> for simplicity.
>
> #generate test "model results"
> x<-1:9
> y<-rep(c(1,3,1),3)
> model<-c(rep("a",3),rep("b",3),rep("c",3))
> modelresults<-data.frame(x,y,model)
>
> #generate test "data"
> x<-c(2,5,8)
> y<-rep(1.5,3)
> model<-c("a","b","c")
> data<-data.frame(x,y,model)
>
> #combine them into one data set
> combined<-make.groups(modelresults,data)
>
> #custom panel function
> panel.dualplot <- function(...) {
>    panel.xyplot(x[which="modelresults"],y[which="modelresults"],...)
>    panel.points(x[which="data"],y[which="data"],...)
> }
>
> #main call to xyplot
> xyplot(y ~ x, data=combined,
> type = "l",
> panel = panel.superpose,
> groups = model,
> panel.groups = panel.dualplot,
> )
>
>
> I’d be very grateful for any suggestions.
>
> Thanks!
>
> John
>
>
>
> --
> View this message in context: http://r.789695.n4.nabble.com/superimposing-different-plot-types-in-lattice-panel-superpose-tp3642808p3642808.html
> Sent from the R help mailing list archive at Nabble.com.
>
> ______________________________________________
> R-help at r-project.org 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.
>