On Tue, Jul 27, 2010 at 12:41 AM, Deepayan Sarkar
<deepayan.sar...@gmail.com> wrote:
> On Mon, Jul 26, 2010 at 9:11 PM, Prasenjit Kapat <kap...@gmail.com> wrote:
>> Hi,
>>
>> (please Cc me)
>>
>> In xyplot (), type = "l" (or one that includes "l", *el*) is
>> (generally) meaningful only when the 'x' variable is sorted. In
>> practice, one either sorts the data frame before hand or writes a tiny
>> panel function which sorts the supplied x and then calls the default
>> panel.xyplot(). Trouble arises when there is a conditional variable as
>> well as a groups argument.
>>
>> Before giving a reproducible example, is there anything even simpler
>> that I have missed?
[snip]
>
> Here are two simple enough solutions:
>
> ## uses panel.average
>
> xyplot(y ~ x/1000 | C, groups = G, data = D, type = c("p", "a"))
>
> ## more efficient, as no tapply involved
>
> panel.xyplot.sorted <- function(x, y, ...)
> {
> o <- order(x)
> panel.xyplot(x[o], y[o], ...)
> }
>
> xyplot(y ~ x/1000 | C, groups = G, data = D, type = "o",
> panel = panel.superpose,
> panel.groups = panel.xyplot.sorted)
>
Uh, indeed missed that one! Thanks.
--
Prasenjit
______________________________________________
R-help@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.
