Gunther -- Yes, though you need to be more precise in what you mean by 'calling these functions from C'. I suppose you mean an independent C program, in which case you will embed and run R from your C program (section 8 of the 'Writing R Extensions' manual). Likely you will invoke R-level functions from C, perhaps using instructions in section 5.11 of the 'Writing R Extensions' manual. On the other hand, perhaps you mean calling R functions from other R functions at the C level (section 5.11 again) or calling C functions from other C functions, all within R. An interesting example of this is the Bioconductor preprocessCore package and those (e.g., affy) that use it. The R-devel mailing list, or perhaps Bioc-devel mailing list for questions specifically related to Bioconductor, will be the right source for help on the general topic of embedding R in C. Please also send a new email, rather than responding to a different thread and changing the subject line, when asking a new question, otherwise your question is grouped with the original email (see your email at https://stat.ethz.ch/pipermail/bioconductor/2008-March/thread.html). Martin Quoting Gunther H?ning <gunther.hoening at="" ukmainz.de="">: > Dear list, > > is it possible to use functions provided in Bioconductor (e.g. gcrma, > affybatch, vns...) > in C? > Or calling these functions from C? > > Wishes > Gunther > > _______________________________________________ > Bioconductor mailing list > Bioconductor at stat.math.ethz.ch > https://stat.ethz.ch/mailman/listinfo/bioconductor > Search the archives: > http://news.gmane.org/gmane.science.biology.informatics.conductor >