Gabor Grothendieck wrote:
> DF <- data.frame(a = c(3, 4, 2, 3, 2, 4, 2), b = 7:1))
> DF[do.call(order, DF),]
>
> will sort on all the columns.
... and you can use
DF[do.call(order, DF[names]),]
if you have the column names in a character vector.
>
> On 11/28/06, michael watson (IAH-C) <[EMAIL P
Thanks guys, sorted now :)
From: Peter Dalgaard [mailto:[EMAIL PROTECTED]
Sent: Tue 28/11/2006 11:05 AM
To: Gabor Grothendieck
Cc: michael watson (IAH-C); r-help@stat.math.ethz.ch
Subject: Re: [R] Sorting a data frame when you don't know the columns
" <[EMAIL PROTECTED]>
To:
Sent: Tuesday, November 28, 2006 11:45 AM
Subject: [R] Sorting a data frame when you don't know the columns
> Hi
>
> Sorry to ask such a well oiled question, but even with multiple
> google hits I don't think this has been answered very
DF <- data.frame(a = c(3, 4, 2, 3, 2, 4, 2), b = 7:1))
DF[do.call(order, DF),]
will sort on all the columns.
On 11/28/06, michael watson (IAH-C) <[EMAIL PROTECTED]> wrote:
> Hi
>
> Sorry to ask such a well oiled question, but even with multiple google hits I
> don't think this has been answered
Hi
Sorry to ask such a well oiled question, but even with multiple google hits I
don't think this has been answered very well.
It's all well and good doing a sort of a data frame on multiple columns when
you know in advance which columns you want to sort on, but what about when the
names of
