Hi, sorry I can't provide the reproducible code - the formula is currently being worked on for a research paper so I can't really give out details in that regard. That being said, k is initialized to 1 at the beginning of the loop. n has various values (whole numbers, 0 or greater, no upper limit).
On Tue, Mar 26, 2013 at 3:41 PM, Berend Hasselman <b...@xs4all.nl> wrote: > > On 26-03-2013, at 16:25, Sahana Srinivasan <sahanasrinivasan...@gmail.com> > wrote: > > > Hi, > > I'm using R to do a series of calculation and I have gotten several > > warnings that say "NaNS produced". Whatever I could read on line gives me > > an idea that this warning is produced when the number is use is a > negative > > log or otherwise mathematically problematic. > > I'm getting this error while using factorial() and gamma () on strictly > > positive numbers (always greater than zero). > > Here is a snippet of my code: > > k goes from 1 to a positive limit. > > S is always 100. > > Only positive values of n are allowed into the loop. > > > > if(n>0) > > { > > while(k<=lim) > > { > > > > sn<-(S-n);snfact<-gamma(sn); > > sn2<-(2-n+S);sn2gam<-gamma(sn2); > > > > num<-(ngam*sn2gam); > > > > > > nk2<-(2+k-(2*n)+S); > > nk2gam<-gamma(nk2); > > den<-(k*nk2gam); > > prob<-(num/den); > > > > sum<-(as.numeric((k*prob))+sum); > > > > k<-k+1; > > } > > } > > > > The error message received for every instance of this loop is : > > In gamma(sn) : NaNs produced > > In gamma(sn2) : NaNs produced > > In gamma(nk2) : NaNs produced > > > > This not reproducible code. > Where is ngam? > Where is k set to 1? > What value does n have? > > Berend > > [[alternative HTML version deleted]] ______________________________________________ R-help@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.