[R] sorting data

[jim holtman]

a <- a[order(a[[4]]),]

On Fri, Oct 28, 2011 at 10:01 AM, nandan amar <nandan.amar at gmail.com> wrote:
> I want to sort my following data set according to value in 4th column
>
>  0 1 0 27877.3044386212 15.8733019973557 2640.42407064348
>  0 1 1 27470.1699006254 35.4182473588807 2303.26461260826
>  0 1 2 27468.0314985496 38.4400363878507 2300.05521684593
>  0 1 3 27469.1130543141 40.7540672493746 2299.32564458085
>  0 1 4 27442.3152643187 52.4342875797706 2277.18286686329
>  0 1 5 27440.7923082136 54.8003481512783 2274.49112409585
> .....
>
> I tried following :
> first i wanted just to sort 4th column
>>a<-read.tables("file_namr")
>>attributes(a)
>
> gives class as
> $class
> [1] "data.frame"
>
> and
>
>> sort(a[4])
> Error in `[.data.frame`(x, order(x, na.last = na.last, decreasing =
> decreasing)) :
>  undefined columns selected
>
> How can I sort the data according to value in 4th column and print along
> with other columns
> --
>
> Amar Kumar Nandan
> Karnataka, India, 560100
> ☎:+91-9019054471
> ✉:nandan.amar at gmail.com
> http://aknandan.co.nr
>
>        [[alternative HTML version deleted]]
>
>
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>



-- 
Jim Holtman
Data Munger Guru

What is the problem that you are trying to solve?