should be in devel now, NAs are ignored (as are non-integers and things
outside the nbin argument)
Martin Morgan wrote:
tabulate has
.C("R_tabulate", as.integer(bin), as.integer(length(bin)),
as.integer(nbins), ans = integer(nbins), PACKAGE="base")$ans
The implementation of R_tabulate has
if(x[i] != R_NaInt && x[i] > 0 && x[i] <= *nbin)
and so copes with (silently drops) NA. Perhaps the .C could have
NAOK=TRUE? This is useful in apply'ing tabulate to the rows or columns
of a (large) matrix, where the work-around involves introducing some
artificial NA value (and consequently copying the matrix) outside the
range of tabulate's nbin argument.
Martin
--
Robert Gentleman, PhD
Program in Computational Biology
Division of Public Health Sciences
Fred Hutchinson Cancer Research Center
1100 Fairview Ave. N, M1-B514
PO Box 19024
Seattle, Washington 98109-1024
206-667-7700
rgent...@fhcrc.org
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