Hi all, It seems that getAttr doesn't return "names" attribute properly as in getAttrib(x, R_NamesSymbol)); If you look at section 4.7.4 in "Writing R Extensions", the second example of SEXP out(SEXP, SEXP) returns NULL for the names attribute of the outer product. This is true for R 1.7.0 on both Win2000 with mingw and Redhat 9.0 with gcc. Is there something I am missing? Best, Tsvetan
getAttr problem
2 messages · Stoyanov, Tsvetan, Brian Ripley
On Fri, 9 May 2003, Stoyanov, Tsvetan wrote:
It seems that getAttr doesn't return "names" attribute properly as in
Is this getAttrib?
getAttrib(x, R_NamesSymbol));
Really? As it is widely used inside R, that seems implausible.
If you look at section 4.7.4 in "Writing R Extensions", the second example of SEXP out(SEXP, SEXP) returns NULL for the names attribute of the outer product.
But the outer product is a matrix and does not have names, so NULL is correct.
This is true for R 1.7.0 on both Win2000 with mingw and Redhat 9.0 with gcc.
Well, the source code is the same for both systems, so that is not surprising (and BTW `mingw' is on ix86 port of gcc, and RH9 (no .0?) uses another ix86 port of gcc).
Is there something I am missing?
Yes: could you supply a complete example with the results you get and an explanation as to why you think it is wrong?
Brian D. Ripley, ripley at 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) Oxford OX1 3TG, UK Fax: +44 1865 272595