[Rd] dynamic array output by .C
Greetings, I am building a stochastic simulation model in a C++ shared library for R. My model will generate a random number of new observations and also delete some old observations, however, the numbers cannot be predicted before the computation engine runs. For simplicity, I am trying to control my programming at the second stage (pure C++ for R). It seems .C accepts fixed size of arrays as input (also ouput), can I modify size of array for deleting old and adding new observations in .C? Thanks in advance. -- I am Tib, not Rob. __ R-devel@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
Re: [Rd] dynamic array output by .C
HI, from the examples of Writing R Extensions, I see one still has to declare the size of arrays by NEW_NUMERIC(n) or allocVector(REALSXP,n), how can I extend arrays? I know this question is a little specific, but it would be a lot helpful if anyone can give me a quick question. Thanks On 4/14/05, Prof Brian Ripley <[EMAIL PROTECTED]> wrote: > On Thu, 14 Apr 2005, Tib wrote: > > > Greetings, > > > > I am building a stochastic simulation model in a C++ shared library > > for R. My model will generate a random number of new observations and > > also delete some old observations, however, the numbers cannot be > > predicted before the computation engine runs. For simplicity, I am > > trying to control my programming at the second stage (pure C++ for R). > > It seems .C accepts fixed size of arrays as input (also ouput), can I > > modify size of array for deleting old and adding new observations in > > .C? > > No, but .Call can. > > -- > Brian D. Ripley, [EMAIL PROTECTED] > 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, UKFax: +44 1865 272595 > -- I am Tib, not Rob. __ R-devel@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
[Rd] could not open libRmath.so
Hi I got a very tricky problem when I tried to compile a C++ program which links to libRmath.so. The program itself had no problem, I can compile and run in my own linux machine where I compiled libRmath.so file and copied it to system directory (/usr/local/lib). Now I want to compile my program at another linux box where I don't have root privilege. That machine only has binary version of R, so I built R from source in my own directory: /Users/tib/R And I also compiled libRmath.so, copied it to /Users/tib/R/bin/ Now I use this to compile my program g++ engine.cpp -o engine -lm -lRmath -I/Users/tib/R/lib/R/include/ -L/Users/tib/R/bin/ it did not report any error, however as I executed the program ./engine it reported: ./engine: error while loading shared libraries: libRmath.so: cannot open shared object file: No such file or directory Why did it report this error but compile through? Is this because the binary R installed system wide affected the compilation? Or did I miss anything? Thanks, tib -- I am Tib, not Rob. __ R-devel@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
