similar to: Use of Rf_duplicate

Dear developers: I have just came across an (unexpected to me) behaviour of lists when assigning NULLs to list elements. I understand that a NULL is a valid R object, thus assigning a NULL to a list element should yield exactly the same result as assigning any other object. So I was surprised when assigning a NULL in fact removed the element from the list. Is this an intended behaviour? If

I have some compiled C code that I call from R, and I would like to distribute this code as an R package through CRAN. In the C code, I use the gsl numerical libraries, mainly for the BLAS interface, some linear algebra functions, and some optimization routines. As I prepare this code to conform to the specs for R packagtes, I am wondering if there is a restriction on the use of external

Hello, is there any one who uses C++ STL classes when programming shared libs for R and has had any problems with STL? In the very simple example below I am constantly getting segfaults when trying to populate the queue. The segfault occurs at what looks like a random index in the loop when pushing another element to the queue. Reproduced on 4 machines. Object x is an Image as in EBImage,

The XML package relies on libxml2.dll (e.g., bundled with the CRAN binary) installed in library/XML/libs. Unfortunately, c:/WINDOWS/system32/libxml2.dll will be found and loaded before this. Is there any programatic solution? Thanks, Martin -- Martin Morgan Computational Biology / Fred Hutchinson Cancer Research Center 1100 Fairview Ave. N. PO Box 19024 Seattle, WA 98109 Location: Arnold

Hi. I am writing some code in C that I would like to link into R. My Makevars file is: PKG_CPPFLAGS=-I/usr/local/include PKG_LIBS=-L/usr/local/lib -lgsl PKG_CFLAGS = -Wall -O0 -g -p -pg The source file is core.c,. and I am compiling using R CMD SHLIB core.c The output is gcc -arch x86_64 -O3 -g -p -std=gnu99 -I/Library/Frameworks/ R.framework/Resources/include

dear people, i need to code a function in C working in R and receives two R SEXP objects as parameters, where one is a list and another is a vector of integers: void f(SEXP list, SEXP vector) { ... return list; } and it should return the given list with the integer vector concatenated at the end (as the last element of the list). the list can be really big so i would not like to create a

Hello, I create a VECSXP(call it A) with size N(~ 5000), i then proceed to fill the elements and find out I don't need to fill more than M (M<< N). Thus if i return A to the user's R code, he/she will see a list of length 5K of which N-M are NULLs. To avoid this, I create a new VECSXP B of length M and /duplicate/ the elements of A. Since I do this often, it appears to be wasteful,

Dear lists: I am somewhat puzzled by the use of texi2dvi/pdflatex in R2.7.0. When building EBImage (bioconductor) with 2.7.0 I get the same error both in Windows and Linux, which reads the following: ** building package indices ... * DONE (EBImage) * creating vignettes ... ERROR /usr/bin/texi2dvi: pdflatex exited with bad status, quitting. Error in texi2dvi(file = bft, pdf = TRUE, clean =

Thanks in advance to anyone that might be able to help me with this problem. I have not been able to find a reference to it in the documentation on online sources, so I am turning to this group. I am running R 2.4.1 under Red Hat Enterprise Linux 4, on an x86_64 platform (multi-core Intel Xeon processors, 3.6Ghx, 8GB of RAM). I have some rather complicated code (so I won't attach it here),

Hi, Trying to decrease the size of a SEXP variable without reassigning values individually in a loop. So far, I've tried using Realloc, as the follow source demonstrates: SEXP dothis() { SEXP Rblah; PROTECT(Rblah = NEW_INTEGER(6)); int* blah = INTEGER(Rblah); blah[0] = 1; blah[1] = 2; blah[2] = 3; Realloc(Rblah, 3, INTEGER); UNPROTECT(1); return(Rblah); } According to the

Hello all, I'm trying to have C called by R. I wrote C codes that worked perfectly fine with R-2.6.0 in windows system ( using R tools). I had to change to SuSE Linux (this system has 3.2 GHz Intel Xeon processors and 4 GB of RAM), the C codes were compiled okay but when it was called to R-2.6.2, I got error mesage : ***caught segfault*** address 0x1df5000, cause 'memory not

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I'm not sure if this is the place to post this question, but, I am having trouble compiling the source code. I do have a suitable C compiler and f2c but I get this error when I run ./configure configure: error: --with-readline=yes (default) and headers/libs are not available Any ideas? Thanks.

I'm not sure if this is the place to post this question, but, I am having trouble compiling the source code. I do have a suitable C compiler and f2c but I get this error when I run ./configure configure: error: --with-readline=yes (default) and headers/libs are not available Any ideas? Thanks.

Dear all R users, Is there any function to omit repeated values in a vector? Your help will be highly appreciated. Thanks stat --------------------------------- Here’s a new way to find what you're looking for - Yahoo! Answers [[alternative HTML version deleted]]

How can I run something like source("filename") from the Unix command line? Maybe somthing like ./R CMD source("filename") - this does not work. I need to run an R source code file with a command from the Unix command line. assuming that I have R installed on my system. Thank you all Amir. -- View this message in context:

Hi, Does any one know if it is possible to create an R script that can use command line parameters. I can execute an R script from the command line, but I cannot figure out how to pass parameters to the script. The only resources I have found seem somewhat involved or incomplete. Any help is appreciated. Akintayo [[alternative HTML version deleted]]

This is a question and maybe an announcement. We've been discussing in the group that it would be nice to have a mechanism for something like "inline" C/C++ function calls in R. I do not want to reinvent the wheel, therefore, if something like that already exists, please give me a hint -- I could not find anything. If not, here is a working solution, please criticise so I could

hello, how can I do to drop decimal after the comma please for example for tthis line > print(P) [1] 62.000000 1.000000 7.661290 5.200000 17.100000 2.318801 how canI do to keep only 62 1 7.66 5.2 17.1 2.32 thanks __________________________________________________ ble contre les messages non sollicités [[alternative HTML version deleted]]

Hello, All! I'm new for R-devel list. And I'd like to ask some questions, maybe they will be stuped for the most part of members of the list. I need to call function which is written in C++ from R. My questions are: 1. How should I include libraries (for example, iomanip, sstream, iostream)? 2. Can I use namespace? Thanks All :) Olga