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: +32/16/336899 Fax: +32/16/337015 Web: http://www.med.kuleuven.ac.be/biostat/ http://www.student.kuleuven.ac.be/~m0390867/dimitris.htm ----- Original Message ----- From: "Mario Morales" <malfonso at telecom.com.co> To: <r-help at stat.math.ethz.ch> Sent: Friday, April 01, 2005 5:22 AM 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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