[R] get names of list elements

[Chirok Han]

Hi

Consider
> a <- 1:5; b <- 6:10
> x <- list(a=a,b=b)
> y <- list(a,b)

I can get c("a","b") from x using names(x). Is it also possible to get
"a" and "b" from y? (The command "names(y)" gives NULL.)

Thanks in advance.

Chirok

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[R] Source of chickwts data

[Chirok Han]

I'm not sure if this is the right mailing list. My apologies if I'm
sending the question to the wrong mailing list.
(The r-packages list moderator suggested using the R-help list.)

My question is about the "chickwts" data in the datasets package.
According to help(chickwts), the source of the data is

 Anonymous (1948) Biometrika, 35, 214.

But this reference seems irrelevant.
(See http://www.jstor.org/stable/i315414.)

The help document also gives "McNeil, D. R. (1977) Interactive Data
Analysis. New York: Wiley" as a reference, but unfortunately my local
library does not keep the book. Could someone please help me find the
correct source of the data?

Many thanks.

Chirok

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Re: [R] Source of chickwts data

[Chirok Han]

Many thanks. That's the right one.
It would be better corrected in the next version of R.

Thanks again.
Chirok

On Tue, Jun 8, 2010 at 6:01 AM, William Dunlap  wrote:
>> -Original Message-
>> From: r-help-boun...@r-project.org
>> [mailto:r-help-boun...@r-project.org] On Behalf Of Chirok Han
>> Sent: Monday, June 07, 2010 9:51 AM
>> To: r-help
>> Subject: [R] Source of chickwts data
>>
>> I'm not sure if this is the right mailing list. My apologies if I'm
>> sending the question to the wrong mailing list.
>> (The r-packages list moderator suggested using the R-help list.)
>>
>> My question is about the "chickwts" data in the datasets package.
>> According to help(chickwts), the source of the data is
>>
>>  Anonymous (1948) Biometrika, 35, 214.
>>
>> But this reference seems irrelevant.
>> (See http://www.jstor.org/stable/i315414.)
>>
>> The help document also gives "McNeil, D. R. (1977) Interactive Data
>> Analysis. New York: Wiley" as a reference, but unfortunately my local
>> library does not keep the book. Could someone please help me find the
>> correct source of the data?
>
> McNeil's book, page 30, attributes it to
>  "Anonymous query, Biometrics, 1948, page 214"
>
> Bill Dunlap
> Spotfire, TIBCO Software
> wdunlap tibco.com
>
>>
>> Many thanks.
>>
>> Chirok
>>
>> __
>> R-help@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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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.