[R] control span in panel.loess in xyplot

[Felix Andrews]

something like

xyplot(y ~ x, data = d, groups = z,
panel = panel.superpose,
panel.groups = function(..., group.number) {
    panel.xyplot(...)
    span <- switch(group.number, 2/3, 1/4, 1/2)
    panel.loess(..., span = span)
}, auto.key = list(lines = TRUE))

On Friday, April 30, 2010, Santosh <santosh2005 at gmail.com> wrote:
> I could not make group.number work either..how do I get that? ...panel.superpose(panel.groups=group.number(),panel.bwplot,...) ?
>
> On Thu, Apr 29, 2010 at 4:26 PM, Felix Andrews <felix at nfrac.org> wrote:
> Within panel.superpose, the current group number is passed as
> "group.number" to the "panel.groups" function.
>
>
> On 29 April 2010 20:39, Gabor Grothendieck <ggrothendieck at gmail.com> wrote:
>> See ?panel.number for lattice functions that can be used in your panel
>> function to discover which one is currently being drawn.
>>
>> On Thu, Apr 29, 2010 at 6:28 AM, Santosh <santosh2005 at gmail.com> wrote:
>>> Dear R gurus..
>>>
>>> Is it possible to control span settings for different values of a grouping
>>> variable, when using xyplot? an example code shown below
>>> d=data.frame(x=rep(sample(1:5,rep=F),10),y=rnorm(50),z=rep(sample(LETTERS[1:2],rep=F),25))
>>> xyplot(y~x,data=d,groups=z,panel=panel.superpose,panel.groups=panel.loess(span=c(2/3,
>>> 3/4,1/2))
>>> or something like..
>>> xyplot(y~x,data=d,groups=z,panel=function(...)
>>> {panel.superpose(...);panel.groups=panel.loess(span=3/4,...)})
>>>
>>> Thanks,
>>> Santosh
>>>
>>>        [[alternative HTML version deleted]]
>>>
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>>>
>>
>> ______________________________________________
>> 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.
>>
>
>
>
> --
> Felix Andrews / 安福立
> Postdoctoral Fellow
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> The Australian National University
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