similar to: Accessing row and col names of SEXP objects

In the new version 0.90.0, rbind won't take a vector and a matrix from me, but works OK if I coerce the vector to a matrix. The following was run on a new session (i.e., no prior work), and has been duplicated on 2 machines: an SGI running Irix 6.5, and an Intel box running Red Hat Linux 6.0. Either case works fine in version 0.65.1. > t3 <- c(.5, .5) > t4 <-

I'm new to R development, so this may be a trivial question. In C, How do you convert a SEXP value returned by an R function to a primitive C type (int, double, char, array, etc.)? I've tried using the INTEGER(x), VECTOR_ELT(x,i), and similar functions found in /src/ include/Rinternals.h, but doing so results in incorrect results or a seg-fault. For example, I modified

Hello, I'm trying to fetch a data frame through the C API, and have no problem doing this when all columns are numbers, but when there is a column of strings I have a problem. On the C-side the function looks like: SEXP myfunc(SEXP df), and it is called with a dataframe from the R side with: .Call("myfunc", somedataframe) On the C side (actually C++ side) I use code like this:

On Fri, 2003-10-03 at 17:01, Rajarshi Guha wrote: > Hi, > I'm using a package that has a number of formats. I have C code to > parse these formats the results of which are generally integer arrays. > > I would like to utilize these modules in R rather than writing R code to > read in these files (and also to learn about R extensions). Thanks for the pointers to the above

Hello at all ! What is the correct form to give a list form R (e.g. list(c(-1,1), "TestFile") ) to C. I have no problems, if I don't use character and I have also no problems to give a character vector form R to C. But, if I combine real and strings in a list then I don't know the correct syntax. I try it with following (an example): SEXP writeFile(SEXP headerR){ Image

As most R developers maybe are already aware of, R version 1.2.0 introduced a new `generational' garbage collector which means that strings and vectors (and language objects) are handled differently from the numerical atomic types. >From ``Writing R Extensions'': Earlier code was written in a style like. VECTOR(dimnames)[0] = getAttrib(x, R_NamesSymbol);

Dear People, I'm trying to write an R wrapper for a C++ library, using .Call. I've never used .Call before. I'm currently having some difficulties converting a R character string to a C one. Here is a little test program. #include <R.h> #include <Rinternals.h> #include <stdio.h> SEXP testfn(SEXP chstr) { char * charptr = CHAR(chstr); printf("%s",

So this wasn't tested for a month? Anyways, Free() is just free() with a check that we're not freeing a null pointer, followed by setting the pointer to NULL. At that point of tcltk.c, we have for (objc = i = 0; i < length(avec); i++){ const char *s; char *tmp; if (!isNull(nm) && strlen(s = translateChar(STRING_ELT(nm, i)))){ // tmp =

I have created a DLL not so long ago using C code. My code used the IntegerFromString() function that used to be exported in the Rinternals.h header file (and thus easily accessible). Recently I upgraded to R 2.5.0 and my DLL stopped working. I see that the IntegerFromString() function is not exported in any of the header files in the RHOME\include directory. Is it possible for me to use it

On Sun, Jun 7, 2020 at 5:53 PM <luke-tierney at uiowa.edu> wrote: > > On Sun, 7 Jun 2020, peter dalgaard wrote: > > > So this wasn't tested for a month? > > > > Anyways, Free() is just free() with a check that we're not freeing a null pointer, followed by setting the pointer to NULL. At that point of tcltk.c, we have > > > > for (objc = i = 0;

[ Disclaimer: Yes, I do know that RODBC is in a state of minor limbo as far as maintenance is concerned. But it is also useful, and used, which is why I hope that someone might apply the small change outlined below. ] The current version in CRAN's devel directories fails to build under R 1.6.1 (beta from Oct 27): chibud:/home/edd/RODBC# R CMD INSTALL . * Installing *source* package

Hi, I am trying to get information about factors from a C-program. As I see, the factors are basically integers with attribute ,,levels''. But unfortunately I am not been able to read the levels information. I am using: SEXP variable, levels; ... variable = VECTOR_ELT( data_frame, j); switch( TYPEOF( variable)) { case INTSXP: if( isFactor( VECTOR_ELT( data_frame,

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

Hello, Since people have whisperred about Rcpp, I'd like to play too. > On 11/15/2010 07:45 AM, Patrick Leyshock wrote: >> Very helpful, thank you. >> >> A couple other questions, please: >> >> 1. I've got a function written in C, named "my_c_function". In my R >> code I call this function, passing to it an INTSXP and a STRSXP, >>

I've looked at how to speed up the transpose function in R (ie, t(X)). The existing code does the work with loops like the following: for (i = 0; i < len; i++) REAL(r)[i] = REAL(a)[(i / ncol) + (i % ncol) * nrow]; It seems a bit optimistic to expect a compiler to produce good code from this. I've re-written these loops as follows: for (i = 0, j = 0; i<len; i +=

I've committed the change to use Free instead of free in tcltk.c and sys-std.c (r78652 for R-devel, r78653 for R-patched). We might consider either moving Calloc/Free out of the Windows remapping or moving the remapping into header files so everything seeing our header files uses our calloc/free. Either would be less brittle that the current status. Best, luke On Sun, 7 Jun 2020, peter

Dear R-devel, A couple of weeks ago I started to use the R C API for package development. Without knowing much about C, I've been able to write some routines sucessfully... until now. My problem consists in dynamically creating a list ("L1") of lists using .Call, the tricky part is that each element of the "mother list" contains two vectors (INTSXP and REALEXP types) with

I was finally able to get ldapnodes [1] working on our puppetmaster so i''m able to start working on the fun stuff. In the last few days it has become critical that we come up with a better way to manage the configuration of our Solaris zones. I am planning to write a recipe that provisions the zone [using the zone resource type], but would like to avoid having to keep a stockpile

Dear R Developers, DISCLAIMER: I am new to package development in R and new to this list. I am trying to do something along the lines of: SEXP test_fun (SEXP filename) { const char *inputfile = translateChar(STRING_ELT(filename, 0)); int abc = some_function(inputfile); ... } The code compiles fine, but I get a warning: "passing argument of 'some_function' discards qualifiers

libswfdec/Makefile.am | 2 libswfdec/swfdec_js_global.c | 11 +++- libswfdec/swfdec_js_movie.c | 52 +++++++++++++++++++ libswfdec/swfdec_root_movie.c | 86 +++++++++++++++------------------ libswfdec/swfdec_root_movie.h | 10 +-- libswfdec/swfdec_script.c | 4 - libswfdec/swfdec_sprite.h | 2