Hello, I made a mistake today on simple counting in R, that almost got me into trouble. After trying multiple times, I finally figured out it's rounding issue in R.
For exmaple, when I just simply type: > (6.9-6.3) > 0.6 [1] TRUE 6.9-6.3 should be 0.6 exactly, but R thinks that it's greater than 0.6!! Similarly, R thinks 5.6-5.5 is smaller than 0.1: > (5.6-5.5) < 0.1 [1] TRUE Why is the above happening? This rounding issue seems to be small, but this could cause serious problem in real world. Can anyone shed a light on how to avoid the issue? Thanks, Yi ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.
