On Sun, 14 Sep 2003, Spencer Graves wrote: > I wish to comment on interesting and inconsistent behavior of both > S-Plus and R with integers.
I think both are consistent: they are just different from each other. > In R 1.7.1 for Windows, is.integer(2) is FALSE, though > is.integer(1:2) and is.integer(max(1:2)) are both TRUE. S-Plus 6.1 > produces TRUE for all three cases. Yes, that's as documented. Note that `2' was not integer in S-PLUS 1.x to 4.x (including 2000), so this is rather an inconsistency in S-PLUS versions. > Meanwhile, as.integer(1e111) produces NA in R 1.7.1 and 2147483647 in > S-Plus 6.1. This behavior is consistent with the documentation in both > cases: R says, "The answer will be `NA' unless the coercion succeeds." > S-Plus says, "The numbers are truncated (moved to the closest integer > ...)." > > Just one more thing to consider when trying to produce transportable > scripts. Not that in porting code (both ways) I have ever found either to be a problem. -- Brian D. Ripley, [EMAIL PROTECTED] Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595 ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
