[R] plot.prcomp() call/eval

[Jessica Streicher]

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On 29.06.2012, at 10:05, Jessica Streicher wrote:

> Well, i built the methods to create a bit of latex and plot to pdf files for figures, especially figures with subfloats, which weren't possible with sweave (at least i didn't find a way). So i only have to make the calls, give them to the method, and will get proper latex, and the plots will be saved to files.
> 
> I'm saving several lines of latex and several lines when creating the file each time i use it, and i use it often.
> 
> 
> On 28.06.2012, at 17:47, Joshua Wiley wrote:
> 
>> On Thu, Jun 28, 2012 at 8:27 AM, Jessica Streicher
>> <j.streicher at micromata.de> wrote:
>>> Thanks Josh,
>>> 
>>> that soggy sandwhich saves me a LOT of code by the way,
>>> I'll keep it  for the time being  ;)
>> 
>> There may be other ways.  With no knowledge of your context, obviously
>> I cannot say absolutely that there are better ways to save yourself
>> code, but I can say that there often are.
>> 
>>> 
>>> greetings
>>> Jessica
>>> 
>>> On 28.06.2012, at 17:15, Joshua Wiley wrote:
>>> 
>>>> Hi Jessica,
>>>> 
>>>> x <- call("plot", quote(pcaI))
>>>> eval(x)
>>>> 
>>>> that said, I suspect you would be better off avoiding this idiom
>>>> altogether.  Storing unevaluated calls is akin to putting tomatoes on
>>>> your sandwich before packing it for work---you can do it but you end
>>>> up with a soggy sandwich by the time you are eating it.  Better to
>>>> store the bread and tomatoe separately and put them together when you
>>>> want a delicious sandwich.
>>>> 
>>>> Cheers,
>>>> 
>>>> Josh
>>>> 
>>>> On Thu, Jun 28, 2012 at 8:03 AM, Jessica Streicher
>>>> <j.streicher at micromata.de> wrote:
>>>>> Hi!
>>>>> 
>>>>> I am getting a lot of numbers in the background of the pca screeplots if i use call("plot") and eval(somecall).
>>>>> Til now, creating the calls and plotting later on this way worked fine. Example:
>>>>> 
>>>>> pcaI<-prcomp(iris[,1:4])
>>>>> plot(pcaI)
>>>>> 
>>>>> x<-call("plot",pcaI)
>>>>> eval(x)
>>>>> 
>>>>> Anyone got an idea how i can avoid that? (also it might take a second or so for the numbers to appear, so wait a bit before you tell me everythings fine ^^)
>>>>>       [[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.
>>>> 
>>>> 
>>>> 
>>>> --
>>>> Joshua Wiley
>>>> Ph.D. Student, Health Psychology
>>>> Programmer Analyst II, Statistical Consulting Group
>>>> University of California, Los Angeles
>>>> https://joshuawiley.com/
>>> 
>> 
>> 
>> 
>> -- 
>> Joshua Wiley
>> Ph.D. Student, Health Psychology
>> Programmer Analyst II, Statistical Consulting Group
>> University of California, Los Angeles
>> https://joshuawiley.com/
> 
> ______________________________________________
> 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.