search for: robjectt

I was wondering if anyone knows more about the state of RObjectTables. This largely undocumented functionality was introduced by Duncan around 2002 somewhere and enables you create an environment where the contents are dynamically queried by R through a hook function. It is mentioned in R Internals and ?attach. This functionality is quite powerful and allows you...

...a relatively recent versions of R 3.2.0, including the RC. It looks like the problem can be traced back to the use of R_ObjectTables (see R_ext/Callbacks.h) The problem is a bit difficult to reproduce because it does not appear on x64 and because the official R interface to this functionality, the RObjectTables package from OmegaHat, is no longer maintained. I created a slightly updated version of RObjectTables package (added a NAMESPACE file) to reproduce the problem: devtools::install_github("jeroenooms/RObjectTables") The problem can be triggered using the included example from the D...

>>>>> Jeroen Ooms <jeroenooms at gmail.com> >>>>> on Tue, 14 Apr 2015 23:11:01 -0700 writes: > On Tue, Apr 14, 2015 at 6:29 PM, Jeroen Ooms > <jeroenooms at gmail.com> wrote: >> Things work as expected up till dbread(), but once the >> object-table is attached, R freezes on 32bit whereas it >> works as

...ed R can override routines declared in Rinterfac.h, but is there a way for an application embedding R to register other routines defined in the application without loading a shared library or re-compiling R? The only such way I've found that comes close to a solution to this is creating an RObjectTable and attaching that to the search path. Assignments to variables in that environment can call the table's get routine which is defined in the application, and I think that might be an interesting solution for a new RApache implementation. For the RApache Project, the mod_R.c shared libra...

A new package "g.data" is available on CRAN, to create and maintain databases that work more like the S-Plus model. Here's the official Description for g.data (v1.2): Create and maintain delayed-data packages (DDP's). Data stored in a DDP are available on demand, but do not take up memory until requested. You attach a DDP with g.data.attach(), then read from it and assign

A new package "g.data" is available on CRAN, to create and maintain databases that work more like the S-Plus model. Here's the official Description for g.data (v1.2): Create and maintain delayed-data packages (DDP's). Data stored in a DDP are available on demand, but do not take up memory until requested. You attach a DDP with g.data.attach(), then read from it and assign

...L RmSQL RMySQL gtk RGtk (although we need to add a typedef for ulong to gtkAccessors.c) RSPerl XML (this gives a multiple defined symbol for xmlParserError, which is defined in Utils.c but also in libxml.dylib -- I commented out the routine in Utils.c, but this may be a bit heavy handed). Rpy rpvm RObjectTables ======================================================================= CRAN packages I have not tried yet (because I don't have/use the things they interface to) ======================================================================= RODBC ROracle RQuantlib RSQLite ======================...

...iting of functions for a package have to deal with (very) large arrays and I was considering that having them in files rather than in memory would help me a bit on the memory side of the things. I was thinking of accessing the elements in the arrays by 'seek' and friends in C. The package RObjectTables seems to provide the framework to do this kind of thing, but I have questions: - The speed side of the things worries me. Is the idea totally stupid ? - Does anybody out there have experience in doing similar things (and why not dream about it, doing the exact same thing ;) ) with R ? Than...

...er, rhdf5, marrayTest, marrayClasses, marrayInput, marrayPlots, multtest, ROC, tkWidgets -- snow from Tierney -- deal from gR -- from Devel Dopt, GRASS, PHYLOGR, R2HTML, RPgSQL, dseplus, pls, runstat, multidim, mclust, ensemble, locfit, write-snns -- from OmegaHat gtk, OOP, RGtk, RGtkViewers, RObjectTables, RSPerl, RSPython what does NOT load tkrplot > library(tkrplot) Loading required package: tcltk dyld: /usr/local/lib/R/bin/R.bin malformed library: /usr/local/lib/R/library/tkrplot/libs/tkrplot.so (not a Mach-O library file, bad filetype value) Trace/BPT trap === Jan de Leeuw; Profe...

...ed. Also, if there's significant interested, maybe R core would be interested in this. 3. What exactly is PopCon tracking as far as symbol names go? It currently used an R_ObjectTable object attached to the search path to capture names, but is this the best way? see http://www.omegahat.org/RObjectTables/. It's also replacing base::getHook to trap library loads. 4. What else would be interesting to track? Some folks have suggested various bits of R.Version() output. Here's what PopCon can currently do: > library(PopCon) > search() [1] ".GlobalEnv" "...

Hi, I have been enjoying r for some time now, but was wondering about working with larger data files. When I try to load in big files with more than 20,000 records, the programs seems unbable to store all the records. Is there some way that I can increase the size of records that I work with? Ideally I would like to work with census data which can hold a million records. Greg

...ed. Also, if there's significant interested, maybe R core would be interested in this. 3. What exactly is PopCon tracking as far as symbol names go? It currently used an R_ObjectTable object attached to the search path to capture names, but is this the best way? see http://www.omegahat.org/RObjectTables/. It's also replacing base::getHook to trap library loads. 4. What else would be interesting to track? Some folks have suggested various bits of R.Version() output. Here's what PopCon can currently do: > library(PopCon) > search() [1] ".GlobalEnv" "...