similar to: Transferring ownership of R-managed buffer

http://www.keittlab.org/ On Wed, Mar 29, 2017 at 1:04 PM, Herv? Pag?s <hpages at fredhutch.org> wrote: > Hi Tim, > > On 03/29/2017 08:24 AM, Tim Keitt wrote: > >> I have a use case where I would like to create an SEXP around an existing >> buffer that is managed by R, thus avoiding a copy operation. >> > > What to you mean exactly by "an existing

Hi Tim, On 03/29/2017 08:24 AM, Tim Keitt wrote: > I have a use case where I would like to create an SEXP around an existing > buffer that is managed by R, thus avoiding a copy operation. What to you mean exactly by "an existing buffer managed by R"? > If I have > something like: > > void *p = (void*) RAW(PROTECT(Rf_allocVector(RAWSXP, n))); > ... additional

Tim, What you're describing is a special case of the ALTREP framework/API that Luke Tierney, Tomas Kalibera, and I are working on putting into R. See my initial proposal to the DSC here: https://www.r-project.org/dsc/2016/slides/customvectors.html and the subsequent branch here: https://svn.r-project.org/R/branches/ALTREP/ where Luke and I have merged the ideas from that proposal with work he

On Wed, Mar 29, 2017 at 4:56 PM, Gabriel Becker <gmbecker at ucdavis.edu> wrote: > The concept of having a vector which is a "window" into another vector > without duplication ( which I suspect is at least related to your use-case, > though I could be wrong) is a special case of one of alt-representations I > have implemented there. > Nice. That is exactly what I

Heads up: I posted this question on Stackoverflow yesterday (http://stackoverflow.com/questions/26484103/using-a-custom-memory-allocation-function-in-r). So far I haven?t gotten a response and I thought this could be an even better place to ask such a question. I would like to be able to use my own memory allocation function for certain data structures (real valued vectors and arrays) in R. The

Hello, I've noticed that with g++ 4.3 I get the following "warning: deprecated conversion from string constant to ?char*?" when I call e.g., Rprintf("Hello world"); or when I try to define a const char e.g., char lower = 'L'; I am wrapping the c++ code in extern "C" {}. This seems to be something new with g++ 4.3, because the same code compiled

Hi folks, I apologise if this is in the documentation somewhere, but I can't seem to find it. I also did a search of CRAN without any success. I'm using R-1.8.1 (pre-compiled) on Windows 2000 with Rtools and mingw 2.0.0 (which includes gcc/g++ 3.2). I'm trying to link some C++ code from another application to R using the .Call interface and am experiencing some problems. I was

Full_Name: The Manager Version: 2.0.1 OS: Solaris 9 Submission from: (NULL) (129.67.80.243) > install.packages("gbm") trying URL `http://cran.uk.r-project.org/src/contrib/PACKAGES' Content type `text/plain; charset=ISO-8859-1' length 52975 bytes opened URL ================================================== downloaded 51Kb trying URL

There seems to be a latent flaw in the definition of struct SEXPREC in Rinternals.h, which likely doesn't cause problems now, but could if the relative sizes of data types changes. The SEXPREC structure contains a union that includes a primsxp, symsxp, etc, but not a vecsxp. However, in allocVector in memory.c, zero-length vectors are allocated using allocSExpNonCons, which appears to

Hi, With the sid package jags (2.0.0-1) and r-base-core (2.11.0-1), I cannot install package rjags anymore (this used to work at some point; can't recall exactly at what R/JAGS versions): ---<--------------------cut here---------------start------------------->--- R> install.packages("rjags", configure.args="--with-jags-modules=/usr/lib/JAGS/modules-2.0.0")

Hi everybody, I''m using R on a 64-bit Ubuntu 9.04 (Jaunty). I prefer to install R packages from source, even if they are available in Synaptic. The problem is that I can''t install/compile kernlab. Everything works fine until it gets to the lazy loading part: ** preparing package for lazy loading Creating a new generic function for "terms" in "kernlab"

Dear list, I am writing C code to interface with R, and I would like to know the level of mutability for the type of a SEXP. I see that there is a macro/function TYPEOF(), and that it can be used as an l-value, as well as a macro/function SET_TYPEOF(). My question is "should the type be considered immutable, or it can it change after the SEXP has been created and used for a while ?".

On Wed, May 25, 2016 at 7:22 AM, Michael Lawrence <lawrence.michael at gene.com > wrote: > On Wed, May 25, 2016 at 4:23 AM, Jeroen Ooms <jeroen.ooms at stat.ucla.edu> > wrote: > I'm not disagreeing with what's been said in this thread, but I can't help but recall that I brought up this exact issue probably 15 years ago and was told (by Brian, I believe)

Hi All, I am new to this area and use Rcpp to call C++ from R and try to build the package under Windows 7. I use Rtools and R 2.10.1 32bit. Everything works fine with me, except using R functions like "rnorm" or "runif" in the C++ code. When I use "R CMD check" the package, it always return error ** libs making DLL ... g++

Hi, I'm quite knew in R, so I might not have the R specific jargon. But here is my problem, I'm trying to access and use variabels given by a function environment, more specifically the rho in do_optim in src/main/optim.c According to the documentation http://cran.r-project.org/doc/manuals/R-ints.html#The-_0027data_0027 the envsxp is defined as a tagged pairlist. "ENVSXP: Pointers

I'm just curious if anyone else has had problems with this configuration. I added the CRAN repository to apt and installed 2.5.0 with apt-get. I then did an install.packages("Rmpi") on cluster nodes. Rmpi loads and lamhosts() shows the nodes, but mpi.spawn.Rslaves() fails (something to do with temp files?). Rmpi works fine with the Edgy-native version of R (2.3.x) and installing

I am running into a wall getting my system to work with rcpp and inline. Following Dirk's advice on stackoverflow, I hope someone is able to help me. My steps were to install MinGW 32 bit first, then installing Rtools, I disabled MinGW's entry in the PATH. I am trying to get the following code to work: library(Rcpp) library(inline) body <- ' NumericVector xx(x); return wrap(

Dear R-Developers, I just started learning how to use Rcpp. Earlier while using it, I encountered an error as shown below: file74d8254b96d4.cpp: In function ‘Rcpp::NumericVector foo(Rcpp::NumericVector, Rcpp::NumericVector, Rcpp::NumericVector, Rcpp::Function, Rcpp::Function)’: file74d8254b96d4.cpp:10: error: invalid operands of types ‘SEXPREC*’ and ‘R_len_t’ to binary ‘operator/’ make: ***

>> I am trying to compile rseries from Whit Armstrong and a colleague of mine found a problem with using GCC4 I get the following error when compiling rseries g++-sjlj -Ic:/R/include -O2 -Wall -c Rutils.cpp -o Rutils.o Rutils.cpp: In function 'double* getColPointer(SEXPREC*, int)': Rutils.cpp:406: warning: deprecated conversion from string constant to 'char*'

Hi, Please see below for post on r-help regarding data.frame() and the possibility of dropping rownames, for space and time reasons. I've made some changes, attached, and it seems to be working well. I see the expected space (90% saved) and time (10 times faster) savings. There are no doubt some bugs, and needs more work and testing, but I thought I would post first at this stage. Could some