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:malfonso at telecom.com.co]
Sent: Thursday, March 31, 2005 10:23 PM
To: r-help at stat.math.ethz.ch
Subject: [R] a R function for sort a data frame.
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.
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a R function for sort a data frame.
2 messages · bogdan romocea, Francisco J. Zagmutt
dat<-data.frame(ID=seq(1,10),x=runif(10,2,50)) dat<-dat[sort.list(dat$ID),] Francisco
From: bogdan romocea <br44114 at yahoo.com>
To: malfonso at telecom.com.co
CC: r-help at stat.math.ethz.ch
Subject: RE: [R] a R function for sort a data frame.
Date: Fri, 1 Apr 2005 06:07:05 -0800 (PST)
dfr <- data.frame(sample(1:50,10),sample(1:50,10))
colnames(dfr) <- c("a","b")
dfr <- dfr[order(dfr$a),]
dfr <- dfr[order(-dfr$a),]
-----Original Message-----
From: Mario Morales [mailto:malfonso at telecom.com.co]
Sent: Thursday, March 31, 2005 10:23 PM
To: r-help at stat.math.ethz.ch
Subject: [R] a R function for sort a data frame.
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.
______________________________________________ R-help at 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 ______________________________________________ R-help at 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