Guillaume Yziquel wrote: > Laurent Gautier a écrit : >> Guillaume Yziquel wrote: >>> Hi. >>> >>> I'm working on an OCaml binding for R. Namely OCaml-R. >>> >>> Could someone point me to the code in rpy which is used to force >>> promises (i.e. PROMSXP SEXPs)? That would be really helpful. >> http://bitbucket.org/lgautier/rpy2/src/tip/rpy/rinterface/rinterface.c#cl-3171 >> line 3171-3177. > > Thank you so much. > > OK. So you simply eval the PROMSXP, as you would with a LANGSXP? That's > the kind of information I haven't been able to find on r-de...@... or in > the documentation.
Yes. I had the same problems as you, so I looked in the R source for places where PROMSXP was used... > Moreover, you consider using R_tryEval if you want to catch errors, I guess. > >>> Please tell me if my post is off-topic and unwelcome. >> Well, you are asking implementation details. I cannot find a way to call >> this "off-topic" ;-) > > Well, one never knows. It's not exactly rpy that I'm interested in, but > my own binding. So I'm taking gloves. No problem. >> Best, >> >> L. >> >> PS: I followed your recent post to r-devel with interest. I considered >> making lower level bindings at some point but postponed it to an >> unspecified release in the future (if this ever happens). > > Thanks. I'm not doing low-level for the fun of it (even if I believe > that being able to natively compile R code through the OCaml compiler > would be a valuable offspring), but mostly because I find it really hard > to get documentation on the regular API. So I figured out that delving > into structures would be interesting, less time-wasting. The best documentation I found for building a bridge between an other language and R is: - the R source - the source for what seems to be the only other maintained bridge: JRI > If you care, you can try out the Debian package on my website. It's > always the latest version of OCaml-R that compiles. I'd be interested in > any feedback, even it's simply documentation requests, or "doesn't work > for me". Moreover, I believe that using OCaml's toplevel pretty-printer > to display R values would perhaps be of interest to you. As OCaml is > more static and functional than Python, you also have in > R.Internal.Pretty module (or more precisely in the > R.Internal.PrettyTypes module-argument to the R.Internal.Parser functor) > a function called build, which could be seen as work-in-progress > specification of the structure of SEXPs. > (...the inside on an R SEXP was exposed here...) > P.S.: Do you mind if I cross-post to ocaml-r-de...@? > Not at all. ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ rpy-list mailing list rpy-list@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/rpy-list
