median() has never worked for even-length factors but the error message was rather unclear (complained about sum not working for factors). But it did give an "answer" of sorts for odd-length factors.
Now it doesn't work for either, which is a Good Thing, since there is no obvious extension of the idea of numeric median to factors. If you insist you can use median(as.numeric(myfactor)) but you should think very carefully what this actually means. Perhaps it has some kind of meaning for ordered factors, but mostly you'd be better off looking at a table(). > -----Original Message----- > From: John Christie [mailto:[EMAIL PROTECTED] > Sent: 21 November 2003 13:23 > To: [EMAIL PROTECTED] > Subject: [R] what does this mean in R-1.8.1 release notes? > > > Security Warning: > If you are not sure an attachment is safe to open please contact > Andy on x234. There are 0 attachments with this message. > ________________________________________________________________ > > what does this mean in R-1.8.1 release notes? > > o median() no longer `works' for odd-length > factor variables. > > ______________________________________________ > [EMAIL PROTECTED] mailing list > https://www.stat.math.ethz.ch/mailman/listinfo/r-help > Simon Fear Senior Statistician Syne qua non Ltd Tel: +44 (0) 1379 644449 Fax: +44 (0) 1379 644445 email: [EMAIL PROTECTED] web: http://www.synequanon.com Number of attachments included with this message: 0 This message (and any associated files) is confidential and\...{{dropped}} ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
