In addition to taking cognisance of Richard Heiberger's reply you should also learn to distinguish between the concept of "null" and "zero". They are not at all the same thing. cheers, Rolf Turner On 11/07/12 08:17, ollestrat wrote:
Hello, I fear its a stupid question,..but here it is: If I do this simple calculation with the R console, I surprisingly do not get a zero. Why? -1.1-0.1+1.2 [1] -2.220446e-16 greetings, Ole
______________________________________________ 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.