How about this? length(res[res < 0, 1]) HTH, Andy > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] Behalf Of Frederic renaud > Sent: Wednesday, January 05, 2005 11:08 AM > To: [email protected] > Subject: [R] count element in column > > > Hi, > I 've a matrix n*1 (thus a column) and I would like to > count the number of negative element inside. > Can you help me? > Thanks! > > eg: > res[,1]= 1 > -3 > -1 > > How obtain the number 2 (number of negative-element)? > > ______________________________________________ > [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 >
______________________________________________ [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
