I looked at strip.custom()'s code and now get it, too. Here's the
version for that:
xyplot(y~x|f, strip=strip.custom(factor.levels=c("a","b"),style=1))
Both of these require precomputing the factor.levels vector of
character (or expression) labels. I see no obvious way to calculate
them on the fly on a per panel basis based on the data that appear in
the panel, save perhaps by writing a new strip function using grid. If
there is an easier way, I would appreciate being told how.
Best,
Bert
On Sun, Nov 18, 2012 at 11:13 AM, Bert Gunter <bgun...@gene.com> wrote:
> Ken:
>
> Aha! Thank you.
>
> I was thrown by the phrase in the Help file, "currently being drawn,"
> which I parsed to the levels rather the conditioning variable. As I
> suspected, user error!
>
> Still not sure why strip.custom fails.
>
>
> -- Bert
>
> On Sun, Nov 18, 2012 at 10:25 AM, Ken Knoblauch <ken.knobla...@inserm.fr>
> wrote:
>> Bert,
>>
>> A little bit of experimentation and I got this:
>>
>> library(lattice)
>>
>> x <- 1:10
>> y <- runif(1:10)
>> f <- factor(rep(1:2,5))
>> xyplot(y ~ x | f,
>> strip = function(which.panel, factor.levels,...){
>> lab <- c("a","b") #[which.panel]
>> strip.default(factor.levels = lab,
>> which.panel = which.panel, style=1,...)}
>> )
>>
>> The help page says about factor.levels:
>>
>> factor.levels
>> vector of character strings or expressions giving the levels of the
>> conditioning variable currently being drawn....
>>
>> which suggested it wanted the full list. I think by selecting the one
>> with which.panel, it may have been looking for the second one in
>> the vector, but each time the vector was of length 1. Just idle
>> speculation though...
>>
>> Ken
>>
>> Quoting Bert Gunter <gunter.ber...@gene.com>:
>>
>>> Ken:
>>>
>>> I would have thought so, too. However:
>>>
>>> x <- 1:10; y <- runif(1:10); f <- factor(rep(1:2,5))
>>> xyplot(y~x|f, strip= function(which.panel,factor.levels,...){
>>> lab <- c("a","b")[which.panel]
>>>
>>> strip.default(factor.levels=lab,which.panel=which.panel,style=1,...)} )
>>>
>>> produces label "a" for the first panel, but "NA" for the second. (see
>>> sessionInfo() below).
>>>
>>> This appears to be a bug to me; however, given lattice's maturity, I
>>> am afraid it may well be user error -- in particular, my failure to
>>> parse the Help correctly. Thoughts?
>>> Incidentally, try using strip.custom() instead. I am so far completely
>>> at a loss to understand what is happening there. Your insight would be
>>> greatly appreciated.
>>>
>>> R version 2.15.2 (2012-10-26)
>>> Platform: i386-w64-mingw32/i386 (32-bit)
>>>
>>> locale:
>>> [1] LC_COLLATE=English_United States.1252 LC_CTYPE=English_United
>>> States.1252
>>> [3] LC_MONETARY=English_United States.1252 LC_NUMERIC=C
>>> [5] LC_TIME=English_United States.1252
>>>
>>> attached base packages:
>>> [1] datasets splines grid tcltk stats graphics
>>> grDevices utils methods
>>> [10] base
>>>
>>> other attached packages:
>>> [1] svSocket_0.9-51 lattice_0.19-26 MASS_7.3-22
>>>
>>> loaded via a namespace (and not attached):
>>> [1] cluster_1.14.3 Hmisc_3.10-1 R2HTML_2.2 svMisc_0.9-65
>>> TinnR_1.0-5 tools_2.15.2
>>>>
>>>>
>>>
>>>
>>> -- Bert
>>>
>>> On Sun, Nov 18, 2012 at 8:09 AM, Ken Knoblauch <ken.knobla...@inserm.fr>
>>> wrote:
>>>>
>>>> Tom Roche <Tom_Roche <at> pobox.com> writes:
>>>>
>>>>>
>>>>>
>>>>> As described @
>>>>
>>>>
>>>> <<< clipped >>>
>>>>
>>>>>
>>>>> However I will need to before-and-after compare this to
>>>>
>>>> the results of a
>>>>>
>>>>> reboxing, or 3D regridding, of this data, so I would
>>>>
>>>> prefer instead to
>>>>>
>>>>> label each panel in the lattice with the _value_ of
>>>>
>>>> the level (an
>>>>>
>>>>> atmospheric pressure), rather than the name or
>>>>
>>>> index of the level.
>>>>>
>>>>> How to do that?
>>>>>
>>>>> TIA, Tom Roche <Tom_Roche <at> pobox.com>
>>>>
>>>>
>>>> maybe, see ?strip.custom in lattice
>>>>
>>>> --
>>>> Ken Knoblauch
>>>> Inserm U846
>>>> Stem-cell and Brain Research Institute
>>>> Department of Integrative Neurosciences
>>>> 18 avenue du Doyen Lépine
>>>> 69500 Bron
>>>> France
>>>> tel: +33 (0)4 72 91 34 77
>>>> fax: +33 (0)4 72 91 34 61
>>>> portable: +33 (0)6 84 10 64 10
>>>> http://www.sbri.fr/members/kenneth-knoblauch.html
>>>>
>>>> ______________________________________________
>>>> 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.
>>>
>>>
>>>
>>>
>>> --
>>>
>>> Bert Gunter
>>> Genentech Nonclinical Biostatistics
>>>
>>> Internal Contact Info:
>>> Phone: 467-7374
>>> Website:
>>>
>>> http://pharmadevelopment.roche.com/index/pdb/pdb-functional-groups/pdb-biostatistics/pdb-ncb-home.htm
>>>
>>
>>
>>
>> --
>> Ken Knoblauch
>> Inserm U846
>> Stem-cell and Brain Research Institute
>> Department of Integrative Neurosciences
>> 18 avenue du Doyen Lépine
>> 69500 Bron
>> France
>> tel: +33 (0)4 72 91 34 77
>> fax: +33 (0)4 72 91 34 61
>> portable: +33 (0)6 84 10 64 10
>> http://www.sbri.fr/members/kenneth-knoblauch.html
>>
>> ______________________________________________
>> 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.
>
>
>
> --
>
> Bert Gunter
> Genentech Nonclinical Biostatistics
>
> Internal Contact Info:
> Phone: 467-7374
> Website:
> http://pharmadevelopment.roche.com/index/pdb/pdb-functional-groups/pdb-biostatistics/pdb-ncb-home.htm
--
Bert Gunter
Genentech Nonclinical Biostatistics
Internal Contact Info:
Phone: 467-7374
Website:
http://pharmadevelopment.roche.com/index/pdb/pdb-functional-groups/pdb-biostatistics/pdb-ncb-home.htm
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