You can use dataset$columnname=NULL
HCD ------ Harold C. Doran Director of Research and Evaluation New American Schools 675 N. Washington Street, Suite 220 Alexandria, Virginia 22314 703.647.1628 -----Original Message----- From: Aimin Yan [mailto:[EMAIL PROTECTED] Sent: Tuesday, March 02, 2004 11:59 AM To: [EMAIL PROTECTED] Subject: [R] how to delete a matrix column Hello, I am new to R, How to delete a matrix column. Thanks, ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html