I forgot to reply this to the list; my (apparently quite trivial)
problem is solved.
Begin forwarded message:>
> It just doesn't seem to do anything useful when I do it. If the goal
> were to learn how not to annoy the syntax engine in R, I guess the
> goal was accomplished, but not much beyond that.
>
> --
> David
>
> On Feb 8, 2009, at 11:25 AM, Christopher Jones wrote:
>
>>
>> On Feb 8, 2009, at 11:04 AM, David Winsemius wrote:
>>>>
>>>> > update(titan, panel = function(...) { panel.grid(h = 0,v =
-1)
>>>> panel.barchart(...)})
>>>
>>> Scanning that line makes me wonder if you are forgetting to
>>> separate the individual panel calls with the appropriate separator
>>> (";").
>>
>> This was the problem. My oversight was assuming whitespace didn't
>> matter between calls. It helps with readability but I didn't
>> realize it was required. I was also able to use the newline as a
>> separator:
>>
>> > barchart(Class ~ Freq | Age + Sex, data = as.data.frame(Titanic),
>> groups=Survived, stack=TRUE, layout=c(4,1),
>> auto.key=list(title="Survived", columns=2),
scales=list(x="free"),
>> panel = function(...) { panel.grid(h = 0, v = -1) <--newline here
>> + panel.barchart(...) }) <--works fine
>>
>> The one-liner I posted earlier works with the ; as separator.
>> Thanks.
>>
>>>
>>> My advice would be to spend a bit more time articulating your
goals.
>>
>> Simple: to learn Lattice by copying examples and tweaking the
>> options. I can resume that now.
>> Thanks again,
>> Chris
>>
>>
>>
>>
>>
>
Chris Jones
