On Aug 24, 2012, at 5:48 AM, Frederik Bertling <frederik.bertl...@stud.uni-due.de> wrote:
> Hi, > > I'm doing some easy calculations to normalize some values. This looks like > this: > > x=mean(a+b+c+d ...) > a=a-x > b=b-x > c=c-x > d=d-x > ... > mean(a+b+c+d ...) ---> Should now be 0! > However, I'm getting results like -2.315223e-18 > This is really near to 0 but not very aesthetic. > > Can I prevent this? Or is this behaviour desired? > Thank you very much! > Burtan Read this: http://cran.r-project.org/doc/FAQ/R-FAQ.html#Why-doesn_0027t-R-think-these-numbers-are-equal_003f Regards, Marc Schwartz ______________________________________________ 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.
