Thx for the help... mdiv <- function(dec) { dec <- dec * 4 dec <- round(dec, 0) dec <- dec / 4 dec } where m is a matrix -- m1 <- apply(m, 1, mdiv) ...but it looks like as.integer(x.1*4)/4 or (round(x.1*4,0))/4 might be easier... thx again, ken >From: james.holtman@convergys.com >To: "Ken Termiso" <jerk_alert@hotmail.com> >Subject: Re: [R] Rounding fractional numbers to nearest fraction >Date: Wed, 25 May 2005 14:30:44 -0400 > > > > > > > x.1 > [1] 1.07 1.11 1.27 1.59 0.97 0.76 2.23 0.98 0.71 0.88 1.19 1.02 > > as.integer(x.1*4)/4 > [1] 1.00 1.00 1.25 1.50 0.75 0.75 2.00 0.75 0.50 0.75 1.00 1.00 > > > >Jim >__________________________________________________________ >James Holtman "What is the problem you are trying to solve?" >Executive Technical Consultant -- Convergys Labs >james.holtman@convergys.com >+1 (513) 723-2929 > > > > "Ken Termiso" > <jerk_alert@hotmail.c to:="">r-help@stat.math.ethz.ch > om> cc: > Sent by: Subject: [R] Rounding >fractional numbers to nearest fraction > r-help-bounces@stat.m > ath.ethz.ch > > > 05/25/2005 13:27 > > > > > >Hi all, > >I've got a matrix of fractional data that is all positive and greater than >zero that I would like to "loosely" classify, for lack of a better word. It > >looks something like this : > >1.07 1.11 1.27 1.59 0.97 0.76 >2.23 0.98 0.71 0.88 1.19 1.02 > > >What I'm looking for is a way to round these numbers to the nearest 0.25, >i.e. the above matrix would be transformed to : > >1.00 1.00 1.25 1.50 1.00 0.75 >2.25 1.00 0.75 1.00 1.25 1.00 > > >Anyone have a clever way to do this?? > >Thanks in advance, >Ken > >______________________________________________ >R-help@stat.math.ethz.ch mailing list >https://stat.ethz.ch/mailman/listinfo/r-help >PLEASE do read the posting guide! >http://www.R-project.org/posting-guide.html > >