[R] lattice: par.settings with standard.theme() + additional arguments?

[Marius Hofert]

Dear David,

that's funny to read. I guess we did pretty much the same. I also thought I got the list structure wrong and I also tried c()... (since I recently learned from Gabor that a list is only a vector of mode list).... and I also searched for posts with exactly the same words [but wasn't as successful as you :-)].

Thanks for the modifyList()-trick!

Cheers,

Marius

On 2011-01-04, at 17:37 , David Winsemius wrote:

> 
> On Jan 4, 2011, at 11:08 AM, David Winsemius wrote:
> 
>> 
>> On Jan 4, 2011, at 8:39 AM, Marius Hofert wrote:
>> 
>>> Dear David,
>>> 
>>> this I already tried. But as you can see, the plot itself *is* colored. However, I want to have color = FALSE, so, unfortunately, this approach does not work...
>> 
>> Quite right. I didn't see that until you pointed it out. I had many failed attempts at a solution and then searched for prior positngs using par.settings and standard.theme and found one by Ehlers earlier this year that seems to work when modified to your ends:
>> 
>> xyplot(x ~ 1:10, type = "l", par.settings = modifyList(standard.theme(color = FALSE),
>>     list(par.xlab.text = list(cex = 5) )))
>> 
>> I had tried various constructions that I thought would be equivalent, but I think I was getting the levels of the list structure wrong. This also works:
> ### NO,  it doesn't. I failed to notice that the command was incomplete so was looking at my prior plot.
>> 
>> xyplot(x ~ 1:10, type = "l", par.setting=c(list(par.xlab.text = list(cex = 5), standard.theme(color = FALSE))  )
>> 
> Proving that I still do not really understand why the modifyList approach works and what seemed to be equivalents do not. (Next paragraph is wrong.)
> 
>> Notice the use of c() rather than list() to bind them together. When I looked at the output of standard.theme(color=FALSE), there was no par.xlab.text element so it seemed as though there should be no conflict and in fact there wasn't (except for the asynchrony between my brain and the R interpreter.)
>> 
>> best;
>> David.
>>> 
>>> Cheers,
>>> 
>>> Marius
>>> 
>>> On 2011-01-04, at 14:32 , David Winsemius wrote:
>>> 
>>>> 
>>>> On Jan 4, 2011, at 5:57 AM, Marius Hofert wrote:
>>>> 
>>>>> Dear expeRts,
>>>>> 
>>>>> I usually use par.settings = standard.theme(color = FALSE) to create lattice graphics
>>>>> without colors, so something like
>>>>> 
>>>>> library(lattice)
>>>>> x <- runif(10)
>>>>> xyplot(x ~ 1:10, type = "l", par.settings = standard.theme(color = FALSE))
>>>>> 
>>>>> Now I would like to use an additional component in par.settings. I tried several things
>>>>> like
>>>>> 
>>>>> xyplot(x ~ 1:10, type = "l", par.settings = c(standard.theme(color = FALSE), list(par.xlab.text = list(cex = 5, col = "blue"))))
>>>>> 
>>>>> but it doesn't work. I know I could use lattice.options() but is there a way to get it
>>>>> right ("locally") with par.settings?
>>>> 
>>>> Add it as a list element:
>>>> 
>>>> xyplot(x ~ 1:10, type = "l", par.settings = list(standard.theme(color = FALSE), par.xlab.text = list(cex = 5, col = "blue")))
>>>> 
>>>> -- 
>>>> 
>>>> David Winsemius, MD
>>>> West Hartford, CT
>>>> 
>>> 
>> 
>> David Winsemius, MD
>> West Hartford, CT
>> 
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> 
> David Winsemius, MD
> West Hartford, CT
>