On Thu, Nov 20, 2008 at 12:02 AM, Nathaniel Smith <[EMAIL PROTECTED]> wrote: > > In particular, looking at Rinternals.h, VECTOR_ELT etc. are defined in > terms of calculating direct memory offsets from an SEXPREC. Not only > are there no strides (necessary for column-major R to grok row-major > Numpy arrays), but you can't even have a SEXPREC that points to an > array stored elsewhere in memory -- if you want a vector to be visible > in R space, you have to stick a header struct right on the front of > it. >
I believe NumPy can use row-wise or column-wise (Fortran style) arrays. Perhaps any numpy arrays using the Fortran convention could be passed to/from R more efficiently? Peter ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ rpy-list mailing list rpy-list@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/rpy-list
