Re: [R] Sorting a data frame by one of the variables

From: ronggui <042045003_at_fudan.edu.cn>
Date: Sun 16 Oct 2005 - 16:38:59 EST

FAQ 7.23 How can I sort the rows of a data frame?

To sort the rows within a data frame, with respect to the values in one or more of the columns, simply use order().         

>
>Dear all,
>
>I have a date frame like this:
>
>X Y Z
>22 24 4.3
>2.3 3.4 5.3
>.....
>....
>57.2 23.4 34
>
>What my purpose is: to sort the data frame by either X, Y or Z.
>sample output is (sorted by X) :
>
>X Y Z
>2.3 3.4 5.3
>.....
>......
>22 24 4.3
>...
>57.2 23.4 34
>
>I have no idea how to use sort, order or rank functions. Please help me out.
>Thanks!
>
>Leaf
>
>
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2005-10-16



Deparment of Sociology
Fudan University

My new mail addres is ronggui.huang@gmail.com Blog:http://sociology.yculblog.com



R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Sun Oct 16 16:46:17 2005

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