you need: unique(A[, 2])
Best, Dimitris ---- Dimitris Rizopoulos Ph.D. Student Biostatistical Centre School of Public Health Catholic University of Leuven Address: Kapucijnenvoer 35, Leuven, Belgium Tel: +32/(0)16/336899 Fax: +32/(0)16/337015 Web: http://med.kuleuven.be/biostat/ http://www.student.kuleuven.be/~m0390867/dimitris.htm ----- Original Message ----- From: "Shubha Vishwanath Karanth" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Wednesday, January 24, 2007 2:12 PM Subject: [R] Conversion of column matrix into a vector without duplicates > Hi R, > > > > I have a matrix A, > > > > A= > > [,1] [,2] > > [1,] a u > > [2,] b v > > [3,] c x > > [4,] d x > > [5,] e x > > > > I want to put the 2nd column of this matrix in a vector without > duplicates. i.e., my vector v should be (u, v, x), whose length is > 3. > > > > Can anybody help me on this? > > > > Thanks in advance > > Shubha. > > > [[alternative HTML version deleted]] > > ______________________________________________ > [email protected] mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > Disclaimer: http://www.kuleuven.be/cwis/email_disclaimer.htm ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
