R help - Feb 2012 - How to suppress the empty plots in xyplot (lattice)

Dear all,

In a plot command like

xyplot(Y~X|ID*PERIOD,data=...)

xyplot will generate all the possible ID*PERIOD combinations. But not all
of them have data in there. So I have a lot of empty plots. How can I
suppress those empty plots and ask xyplot only to generate plots actually
with data. Thanks.

Jun

	[[alternative HTML version deleted]]

Set up a single (factor) variable that identifies the combinations that exist,
and plot using that variable.
---------------------------------------------------------------------------
Jeff Newmiller                        The     .....       .....  Go Live...
DCN:<jdnewmil at dcn.davis.ca.us>        Basics: ##.#.       ##.#.  Live
Go...
                                      Live:   OO#.. Dead: OO#..  Playing
Research Engineer (Solar/Batteries            O.O#.       #.O#.  with
/Software/Embedded Controllers)               .OO#.       .OO#.  rocks...1k
--------------------------------------------------------------------------- 
Sent from my phone. Please excuse my brevity.

Jun Shen <jun.shen.ut at gmail.com> wrote:
>Dear all,
>
>In a plot command like
>
>xyplot(Y~X|ID*PERIOD,data=...)
>
>xyplot will generate all the possible ID*PERIOD combinations. But not
>all
>of them have data in there. So I have a lot of empty plots. How can I
>suppress those empty plots and ask xyplot only to generate plots
>actually
>with data. Thanks.
>
>Jun
>
>	[[alternative HTML version deleted]]
>
>______________________________________________
>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.

> read ?xyplot
> It takes a skip argument:
> ? ? ? ? ??skip?: logical vector (default ?FALSE?), replicated to be as
> ? ? ? ? ? ? ?long as the number of panels (spanning all pages). ?For
> ? ? ? ? ? ? ?elements that are ?TRUE?, the corresponding panel
> ? ? ? ? ? ? ?position is skipped; i.e., nothing is plotted in that
> ? ? ? ? ? ? ?position. ?The panel that was supposed to be drawn there
> ? ? ? ? ? ? ?is now drawn in the next available panel position, and
> ? ? ? ? ? ? ?the positions of all the subsequent panels are bumped up
> ? ? ? ? ? ? ?accordingly. ?This is often useful for arranging plots in
> ? ? ? ? ? ? ?an informative manner.
>
> Or a 'drop.unused.levels' argument, or a 'subset'.
>
> Any one of these would work .
>
> Cheers
>
> On Tue, Feb 14, 2012 at 10:50 AM, Jun Shen <jun.shen.ut at gmail.com>
wrote:
>> Thanks, Jeff,
>>
>> It did work in one way if I use
>>
>> xyplot(Y~X|as.factor(ID*PERIOD),data=...)
>>
>> But I would like to do something like
>>
>>
xyplot(Y~X|as.factor(paste("ID=",ID)*paste("PERIOD=",PERIOD)),data=...)
>>
>> Then, it didn't work
>>
>> The error message:
>> Error in paste("ID=", ID) * paste("PERIOD=",
PERIOD) :
>> ?non-numeric argument to binary operator
>>
>> On Tue, Feb 14, 2012 at 11:08 AM, Jeff Newmiller
>> <jdnewmil at dcn.davis.ca.us>wrote:
>>
>>> Set up a single (factor) variable that identifies the combinations
that
>>> exist, and plot using that variable.
>>>
---------------------------------------------------------------------------
>>> Jeff Newmiller ? ? ? ? ? ? ? ? ? ? ? ?The ? ? ..... ? ? ? ..... ?Go
Live...
>>> DCN:<jdnewmil at dcn.davis.ca.us> ? ? ? ?Basics: ##.#. ? ? ?
##.#. ?Live
>>> Go...
>>> ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?Live: ? OO#.. Dead: OO#..
?Playing
>>> Research Engineer (Solar/Batteries ? ? ? ? ? ?O.O#. ? ? ? #.O#.
?with
>>> /Software/Embedded Controllers) ? ? ? ? ? ? ? .OO#. ? ? ? .OO#.
?rocks...1k
>>>
---------------------------------------------------------------------------
>>> Sent from my phone. Please excuse my brevity.
>>>
>>> Jun Shen <jun.shen.ut at gmail.com> wrote:
>>>
>>> >Dear all,
>>> >
>>> >In a plot command like
>>> >
>>> >xyplot(Y~X|ID*PERIOD,data=...)
>>> >
>>> >xyplot will generate all the possible ID*PERIOD combinations.
But not
>>> >all
>>> >of them have data in there. So I have a lot of empty plots. How
can I
>>> >suppress those empty plots and ask xyplot only to generate
plots
>>> >actually
>>> >with data. Thanks.
>>> >
>>> >Jun
>>> >
>>> > ? ? ? [[alternative HTML version deleted]]
>>> >
>>> >______________________________________________
>>> >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.
>>>
>>>
>>
>> ? ? ? ?[[alternative HTML version deleted]]
>>
>> ______________________________________________
>> 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.