similar to: Implementing a single-precision class with raw

I am trying to write a C function to create a vector of integers that can be used by the R calling function. I do not know the size of the vector in the R calling function. (Well, actually, I have an upper limit on the size, but that is so large that R cannot allocate it. What I'm doing in the function is to do a sieving procedure, and the result will be small enough to fit into my

Full_Name: Hin-Tak Leung Version: R 2.2.1 OS: x86_64-redhat-linux-gnu Submission from: (NULL) (131.111.186.92) rbind/cbind is unimplemented for raw (RAWSXP) types. I have a working patch implementing the functionality, to follow. --please do not edit the information below-- Version: platform = x86_64-redhat-linux-gnu arch = x86_64 os = linux-gnu system = x86_64, linux-gnu status = major

Full_Name: Prokaj Vilmos Version: R 2-4-0 OS: Windows Submission from: (NULL) (193.224.79.8) PackBits(rbinom(32,1,0.5)==1,"integer") does not work. z<-packBits(rbinom(32,1,.5)==1,"integer") Error in packBits(x, type) : argument 'x' must be raw, integer or logical Taking a closer look at the C code main/character.c do_packBits rutin one can find the following

Hi all I had written a gdb macro to dump the string representation of an SEXPREC type when I realised everything I needed was in inspect.c already in the typename() function. However, the typename function doesnt handle the RAWSXP type, so if possible, could the following patch be applied (I've just put in inline as it is a trivial 1-liner)? Index: src/main/inspect.c

Hello, Suppose in the following code, PROTECT(sr = R_tryEval( .... )) sr is a RAWSXP vector. I wish to return another RAWSXP starting at position 13 onwards (base=0). I could create another RAWSXP of the correct length and then memcpy the required bytes and length to this new one. However is there a more efficient method? Regards Saptarshi Guha

R community, As you may know, R's iconv doesn't work well converting to and from encodings that allow embedded nulls. For example > iconv("foo", to="UTF-16") Error in iconv("foo", to = "UTF-16") : embedded nul in string: '\xff\xfef\0o\0o\0' However, I don't believe embedded nulls are at issue here, but rather that R's iconv

Hi, I've been doing some tests using serialize() to a raw vector: df <- data.frame(runif(50e6,1,10)) ser <- serialize(df,NULL) In this example the data frame and the serialized raw vector occupy ~400MB each, for a total of ~800M. However the memory peak during serialize() is ~1.2GB: $ cat /proc/15155/status |grep Vm ... VmHWM: 1207792 kB VmRSS: 817272 kB We work with very

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. If I have something like: void *p = (void*) RAW(PROTECT(Rf_allocVector(RAWSXP, n))); ... additional maniupulation ... SEXP x = somefunc(SXPTYPE, n, p); // ???? Is there a "placement" constructor available? (I have arranged for the corresponding

Hello, I get an error when binary structures from a pipe 'Error: cons memory exhausted (limit reached?)' (but R does not crash) This is probably due to some bug in my code, but occurs after reading about 85K pairs of RAWSXP objects (each < 20 bytes). I do not have any explicit calls to malloc/calloc I'm going through my code and have inserted the (brute force) printf statements

Presumably one could stream over the data twice, the first to get the size, without storing the data. Slower but more memory efficient, unless I'm missing something. Michael On Tue, Mar 17, 2015 at 2:03 PM, Simon Urbanek <simon.urbanek at r-project.org> wrote: > Jorge, > > what you propose is not possible because the size of the output is > unknown, that's why a

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 +=

Dear all, According to CHANGES IN R 3.0.0: o diag() as used to generate a diagonal matrix has been re-written in C for speed and less memory usage. It now forces the result to be numeric in the case diag(x) since it is said to have 'zero off-diagonal entries'. diag(x) does not work for character vector in R 3.0.0 any more. For example, v <- c("a",

Hi, I am not sure if this is a bug and I apologize if it is something I didn't read carefully in the R extension manual. My initial search on the R help and R devel list archive didn't find useful information. I am using .Call (as written in the R extension manual) for the C code and have found that the .Call didn't release the memory claimed by allocVector. Even after applying

Hi, I am not sure if this is a bug and I apologize if it is something I didn't read carefully in the R extension manual. My initial search on the R help and R devel list archive didn't find useful information. I am using .Call (as written in the R extension manual) for the C code and have found that the .Call didn't release the memory claimed by allocVector. Even after applying

Dear Developers, I've been struggling through writing R extension in C. I've been using an external pointer to store my data (please see sample below). I encountered a very weird erroneous behaviour: when I tried to use my external pointer to a structure holding several types of data, including SEXPs, I discovered that SEXPs change their types between returning from initialization

Hi, I'm trying to install RMySQL and I keep hitting errors. My computer is: uname -a Linux cricket 2.6.18-92.1.22.el5PAE #1 SMP Tue Dec 16 12:36:25 EST 2008 i686 i686 i386 GNU/Linux I have set the following environment settings: export PKG_LIBS="-L/usr/lib/mysql -lmysqlclient" export PKG_CPPFLAGS="-I/usr/include/mysql" I run the following command: R CMD INSTALL

Hello, I call a function via .Call passing to it a raw vector(D) and an integer(I) The vector is a series K1,KData1, V1,VData1, K2, KData2, ... where the integer K1 is the length of Data1 and similarly for Ki (wrt Datai)(similarly for V*) There 2*I such pairs( (Ki,KDatai), (Vi,VDatai)) The numbers Ki(and Vi) are written in network order. I am returning a list of I elements each element a

I am trying to use R_RegisterCFinalizerEx to ensure some c++ object is properly deleted after use. However, I run into some problems when trying to pass in the third argument which is an Rboolean. The line 'R_RegisterCFinalizerEx(p, finalizer, TRUE);' generates the following error when trying to compile using R CMD SHLIB: g++ -I/usr/share/R/include -DNDEBUG -fpic -O2 -pipe

Dear R-lister, is there any function for Meta Analysis in R? (like homogeneity an, risk differences, relative riskm amd odds ratios? Many thanks, Edwin

hey, I am running R 2.0.1 on a the terminal of my MAC OS X and I have written some C code that I would like to use dynload to bring into R. When I try to compile the code i get the error R.defines.h no such file or directory. I know that the file is in resources/include but where do I have to move the file to so that the compiler can access it? I tried copying Rdefines.h and R_ext folders