You could do something like this
dataframe[order(dataframe$variable),]
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Mario Morales
Sent: Thursday, March 31, 2005 10:23 PM
To: r-help@stat.math.ethz.ch
Subject: [R] a R function for sort a data frame.
dfr - data.frame(sample(1:50,10),sample(1:50,10))
colnames(dfr) - c(a,b)
dfr - dfr[order(dfr$a),]
dfr - dfr[order(-dfr$a),]
-Original Message-
From: Mario Morales [mailto:[EMAIL PROTECTED]
Sent: Thursday, March 31, 2005 10:23 PM
To: r-help@stat.math.ethz.ch
Subject: [R] a R function for
look at ?order(), e.g.,
dat[order(dat[,1]),]
will sort your data.frame wrt the first column.
I hope it helps.
Best,
Dimitris
Dimitris Rizopoulos
Ph.D. Student
Biostatistical Centre
School of Public Health
Catholic University of Leuven
Address: Kapucijnenvoer 35, Leuven, Belgium
Tel:
Hi,
x - data.frame(A=rnorm(10), B=round(runif(10,0,10)), C=rnorm(10))
#one way:
#increasing order
x.sort.in - x[order(x$B),]
x.sort.in
#decreasing order:
x.sort.de - x[rev(order(x$B)),]
x.sort.de
Best,
Matthias
-Ursprüngliche Nachricht-
Von: [EMAIL PROTECTED]
[mailto:[EMAIL
On Thu, 31 Mar 2005 22:22:32 -0500, Mario Morales
[EMAIL PROTECTED] wrote :
Is there a R function for sort a data frame by a variable ?
I know sort a vector, but I don't know sort a data frame by a
column. Can you help me ?
the sort() function don't work with data frame.
This is a FAQ, but
Le 01.04.2005 05:22, Mario Morales a écrit :
Is there a R function for sort a data frame by a variable ?
I know sort a vector, but I don't know sort a data frame by a
column. Can you help me ?
the sort() function don't work with data frame.
take a look at ?order as in :
A -
http://finzi.psych.upenn.edu/R/Rhelp02a/archive/39835.html
(First hit using RSiteSearch(sort.data.frame) in R-2.1.0 alpha.)
Andy
From: Mario Morales
Is there a R function for sort a data frame by a variable ?
I know sort a vector, but I don't know sort a data frame by a
column. Can you
dat-data.frame(ID=seq(1,10),x=runif(10,2,50))
dat-dat[sort.list(dat$ID),]
Francisco
From: bogdan romocea [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
CC: r-help@stat.math.ethz.ch
Subject: RE: [R] a R function for sort a data frame.
Date: Fri, 1 Apr 2005 06:07:05 -0800 (PST)
dfr -
