On Sun, 11 Apr 2004 21:25:13 -0400, you wrote: >My understanding is that if DUP=FALSE, no copying is done in either >direction. > >If you want to avoid copying, the .Call interface is probably more suitable, >as you pass the actual R objects to the C function. I'm not familiar with >that, though.
If you're using C, .Call (or .External) is not really very hard to use. You want to take a look at the examples in the Writing Extensions manual, and probably in one or two simple packages. The big limitation with .Call is that it is really only practical with C or C++ (because you definitely need to use the R header files), whereas .C and .Fortran make calls that just about any language can handle. Duncan Murdoch ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
