[Rd] R/S indexing difference
ripley@stats.ox.ac.uk
ripley@stats.ox.ac.uk
Wed Feb 5 20:48:03 2003
Is this intentional?
R:
> x <- 1:7
> x[c(1, NA, 3)] <- -(4:6)
> x
[1] -4 2 -6 4 5 6 7
so NAs are treated as FALSE
S+6.1:
> x <- 1:7
> x[c(1, NA, 3)] <- -(4:6)
Warning messages:
Replacement length not a multiple of number of elements to
replace in: x[c(1, NA, 3)] <- - (4:6)
> x
[1] -4 2 -5 4 5 6 7
and NAs are ignored.
--
Brian D. Ripley, ripley@stats.ox.ac.uk
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)
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