[R] Sorting a data frame

Duncan Murdoch dmurdoch at pair.com
Wed Jul 16 16:44:05 CEST 2003

On Wed, 16 Jul 2003 14:42:09 +0100, Wayne Jones <JonesW at kssg.com>
wrote :

>Hi there R-Helpers, 
>Does anyone know if it is possible to sort a dataframe?
>I.e. Sort alphabetically column 1 ( which has some reocurring elements) then
>sort alphabetically column2 but keeping the order of column 1 constant; 
>much the same way that the sort function works in Excel.

The general idea is to use order():

sorted <- unsorted[order(unsorted$col1, unsorted$col2),]

Duncan Murdoch

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