[R] How to extract range of colums in a data frame

[stephen sefick]

x <- dat[,3:9]
# I think this is what you want.

On Sun, Jan 4, 2009 at 9:42 PM, Jorge Ivan Velez
<jorgeivanvelez at gmail.com> wrote:
> Dear Gundala,
> Try this:
>
>> ex<-paste("V",3:9,sep="")
>> new.dat<-dat[,ex]
>> new.dat
>
> HTH,
>
> Jorge
>
>
>
> On Sun, Jan 4, 2009 at 9:36 PM, Gundala Viswanath <gundalav at gmail.com>wrote:
>
>> Dear all,
>>
>> I have the following data frame:
>>
>> > dat
>>   V1                                 V2   V3 V4    V5   V6   V7   V8   V9
>> 1   1 AAAACACCCACCCCCCCCCCCCCCCCCCCCCCCC  9.0 18 12.00 18.0 15.0 12.0  6.0
>> 2   1 ACGATACGGCGACCACCGAGATCTACACTCTTCC 18.0  8 12.00 18.0 15.0 12.0 18.0
>> 3   1 ACTACTGCTCCCCCCCCACTCCCCCCCCCCCCCC 15.0  8 12.00 12.0 18.0 12.0 12.0
>> 4   1 ACTTATACGGCGACCACCGAGATCTACACTCTTT 15.0  6 18.00  6.0 18.0 15.0  9.0
>> 5   1 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 21.0 21 21.00 21.0 21.0 21.0 21.0
>> 6   1 CTACACTCTTTCCCTACACGCCGCTCTTCCGATC 21.0 21 21.00 21.0 21.0 21.0 21.0
>> 7   1 TACACCGCCCCCCCCCATCTCCACACTCTCCCCC 12.0 21 12.00 21.0 21.0 21.0 21.0
>> 8   1 TGATACGCCTACCACCGCCCTCTACACTCTCTCC 15.0  9 18.00 18.0 15.0 15.0  6.0
>> 9   1 TGATACGGCGACCACCGAGATCTACACTCTCTCC 21.0 21 21.00 21.0 21.0 21.0 21.0
>> 10  4 TGATACGGCGACCACCGAGATCTACACTCTTTCC 19.5 18 15.75 19.5 16.5 19.5 18.0
>> 11  1 TGATACGGCGACCACCGAGGATCTACACTCTTTC 21.0 21 21.00 21.0 21.0 21.0 21.0
>> 12  1 TGATACGGCGACCACCGAGGATCTCCACTCTCTC 21.0 21 21.00 21.0 21.0 21.0 21.0
>> 13  2 TGCTCCGGCGACCACCGAGATCTACACTCTTTCC 18.0  8 12.00 18.0 13.5 18.0 13.5
>> 14  1 TTATACGTCGACCACCGAGATCTACACTCTCTCC 18.0 18 18.00 18.0 18.0 18.0 15.0
>> 15  1 TTCTCCGGCGACCACCGAGATCTACACTCTTTCC 18.0  7  9.00 18.0 12.0 18.0 15.0
>> 16  1 TTCTCCGGCGACCACCGCGATCTACACTCTTTCC 18.0  7  9.00 18.0 12.0 18.0 15.0
>>
>>
>> My question is how can I extract the column V3 up to V9 into another
>> new data frame.
>>
>> I tried this but failed:
>> str <- paste("V", 3:9, sep="")
>> print(dat$str)
>>
>>
>>
>>
>> - Gundala Viswanath
>> Jakarta - Indonesia
>>
>> ______________________________________________
>> 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.
>>
>
>        [[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.
>



-- 
Stephen Sefick

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annoying little problems of being mammals.

								-K. Mullis