[R] "parallel" package

admin at use-r.com admin at use-r.com
Sun Apr 29 09:59:37 CEST 2012


I just tried it.

> library <- "quantmod"
> library
[1] "quantmod"
> typeof(library)
[1] "character"

So how do I , or anyone , assign a string without " "?

> library <- quantmod
Error: object 'quantmod' not found

What about this?

> library <- c("quantmod")

Does it do the job? Sorry if it has been asked. I'm still learning R.

>
>
> On 29.04.2012 09:28, Indrajit Sengupta wrote:
>> You don't need quotes in the library statement, you can just use
>> library(parallel).
>
> Yes, a special (mis-)feature of library(). Since we are trying to teach
> R here, we should provide clean R code. In an ideal world, we would be
> able to say
>
> pkg <- "parallel"
> library(pkg)
>
> doing the same as
>
> library("parallel")
>
> which is unfortunately not possible, because library(pkg) tries a
> package called "pkg".
>
> Best,
> Uwe Ligges
>
>
>
>>
>> Regards,
>> Indrajit
>>
>>
>>
>> ________________________________
>> From: Uwe Ligges<ligges at statistik.tu-dortmund.de>
>> To: ya<xinxi813 at 163.com>
>> Cc: r-help at r-project.org
>> Sent: Saturday, April 28, 2012 11:57 PM
>> Subject: Re: [R] "parallel" package
>>
>>
>>
>> On 28.04.2012 20:18, ya wrote:
>>> Hi everyone,
>>>
>>> Anyone knows Where I can get the "parallel" package? The google results
>>> said this package has been released since R 2.14, but I could not find
>>> a
>>> place to get it.
>>>
>>> I am doing a multiple imputation for missing values, it is really time
>>> consuming. I figured maybe it's more efficient by paralleling my CPU. I
>>> got an intel dual core i5 processor in a Thankpad x201 laptop. And I
>>> have used install.packages ("parallel") in R 2.15 on both linux and
>>> windows xp, no package installed. So maybe this package is not on cran?
>>> Any idea?
>>
>> It is shipped as an R base packaage. Just use
>>
>> library("parallel")
>>
>> Uwe Ligges
>>
>>
>>> Thank you very much.
>>>
>>> ya
>>>
>>> ______________________________________________
>>> 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.
>>
>> ______________________________________________
>> 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.
>
> ______________________________________________
> 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.
>



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