Hello Why this works: ncota <- 1 nslope <- 29 resul <- matrix(rep(0,ncota*nslope*4),ncota*nslope,4) But this doesn't? ncota <- 1 sini <- 0.1; sfin <- 1.5; spaso <- 0.05; nslope <- 1+((sfin-sini)/spaso) resul <- matrix(rep(0,ncota*nslope*4),ncota*nslope,4) I guess the problem is that the division gives a noninteger number. How can I get the second one work? I need to create a zero matrix with its size calculated from a calculation. cheers -- View this message in context: http://r.789695.n4.nabble.com/R-Why-this-deosn-t-work-matrix-rounding-error-tp2968527p2968527.html Sent from the R help mailing list archive at Nabble.com.
FAQ 7.31 On Fri, Oct 8, 2010 at 11:27 AM, skan <juanpide at gmail.com> wrote:> > Hello > > Why this works: > ncota <- 1 > nslope <- 29 > resul <- matrix(rep(0,ncota*nslope*4),ncota*nslope,4) > > > > But this doesn't? > ncota <- 1 > sini <- 0.1; sfin <- 1.5; spaso <- 0.05; nslope <- 1+((sfin-sini)/spaso) > resul <- matrix(rep(0,ncota*nslope*4),ncota*nslope,4) > > > I guess the problem is that the division gives a noninteger number. > How can I get the second one work? > I need to create a zero matrix with its size calculated from a calculation. > > cheers > -- > View this message in context: http://r.789695.n4.nabble.com/R-Why-this-deosn-t-work-matrix-rounding-error-tp2968527p2968527.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > R-help at r-project.org 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. >-- Jim Holtman Cincinnati, OH +1 513 646 9390 What is the problem that you are trying to solve?
To make it "work", use "round" to take care of the issues in FAQ 7.31 resul <- matrix(rep(0,round(ncota*nslope*4)),round(ncota*nslope),4) On Fri, Oct 8, 2010 at 11:27 AM, skan <juanpide at gmail.com> wrote:> > Hello > > Why this works: > ncota <- 1 > nslope <- 29 > resul <- matrix(rep(0,ncota*nslope*4),ncota*nslope,4) > > > > But this doesn't? > ncota <- 1 > sini <- 0.1; sfin <- 1.5; spaso <- 0.05; nslope <- 1+((sfin-sini)/spaso) > resul <- matrix(rep(0,ncota*nslope*4),ncota*nslope,4) > > > I guess the problem is that the division gives a noninteger number. > How can I get the second one work? > I need to create a zero matrix with its size calculated from a calculation. > > cheers > -- > View this message in context: http://r.789695.n4.nabble.com/R-Why-this-deosn-t-work-matrix-rounding-error-tp2968527p2968527.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > R-help at r-project.org 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. >-- Jim Holtman Cincinnati, OH +1 513 646 9390 What is the problem that you are trying to solve?