similar to: A question about gc()

Hi, I am trying to output a R data set for use in WinBugs, I used dput(list(x=rnorm(100),N=100),file="bug.dat") But I can't get the intended format: list(x=c(.......),N=100), instead, I got something like this (copied the first two lines): [00000000]???73?74?72?75??63?74?75?72??65?28?6C?69??73?74?28?78???? structure(list(x

Did some search but couldn't find useful result. I am trying to read a n*m dimension data with read.table, what i need is a numeric array, is there any efficient way to allow me get this array directly instead of a list? I tried to use as.array() to change the mode, but seems it doesn't work and i got this error message: "Error in "dimnames<-.data.frame"(`*tmp*`,

Hi, I would like to assign a value to a member b of the list a in position 3, by calling: assign( target, 2.34, 3) My question is what the "target" should be. I tried target <- paste("a", $, "b") and something else, but haven't got the right answer yet. BTW, if I attached a list named

Hi, I just got a quick question here, when I install a new version of R , is there an easy to keep the installed R packages ? Thanks a lot for any help. tong

Hi all, I created environment "mytoolbox" by : mytoolbox <- new.env(parent=baseenv()) Is there anyway I put it in the search path ? If you need some background : In a project, I often write some small functions, and load them into my workspace directly, so when I list the objects with ls(), it looks pretty messy. So I am wondering if it is possible to creat an

Hi All, I have been struggling to figure out how to compile c codes for R use. I am using Win XP + Cygwin + R binaries. After I followed all the instructions in " Building R for Windows" from Murdoch's website, I tried to Run something like : R CMD SHLIB C:\R\test.c , but still didn't get any output. My first question is, does this mean I already did

Hi All, I have been struggling to figure out how to compile c codes for R use. I am using Win XP + Cygwin + R binaries. After I followed all the instructions in " Building R for Windows" from Murdoch's website, I tried to Run something like : R CMD SHLIB C:\R\test.c , but still didn't get any output. My first question is, does this mean I already did

Hi, I am writing a function and need to pass a function expression as an argument, for instance, myfun <- function( express) { x<- c(1,2,3) y<-express } if I call the above function by myfun( x*2 ), I get 2 as the result, instead of 2,4,6 , could someone help me to fix this problem ? Furthermore, is that

Dear UseRs, I need a litle help. I'm trying to read a .dat file of about 71 MB using read.fwf (as data recorded are in fixed width formatted data). R starts in reading data, but after some time, about 1/2 hour, I get this error: Error in .signalSimpleWarning("Reached total allocation of 510: see help(memory.size)" memory.size() 529880586 R is running under windows: sysname

I understand that we need to push the address to a register then branch using the register. But i am asking why there is a trampoline there such that a call to foo is first branched to an snippet and the snippet branches to the X86CompilationCallback. is this snippet necessary ? Thanks Xin On Tue, Feb 22, 2011 at 12:39 PM, Reid Kleckner <reid.kleckner at gmail.com>wrote: > The

The address of the callee may be more than 2 GB away in memory, which cannot be encoded as an immediate offset in the call instruction. So, the value is first materialized with a mov instruction which can encode the immediate and then jumped to through a register. Reid On Tue, Feb 22, 2011 at 12:03 PM, Xin Tong Utoronto <x.tong at utoronto.ca> wrote: > I have a question on the LLVM JIT

I am extending a DBI connection by setClass("TSPostgreSQLConnection", contains=c("PostgreSQLConnection","TSdbOptions")) but the first time I use this I am getting a warning when it tries to coerce the TSPostgreSQLConnection to a PostgreSQLConnection. After the first use the warning stops, but the first warning is causing me problems when I do automatic checks

I have a question on the LLVM JIT I did some brief memory reading one day and I found that a call to a non-library function is resolved by the X86CompilationCallback, but the X86CompilationCallback is reached through a trampoline. why can not the generated code jump to the X86CompilationCallback function directly ? 0x2b0a6a4d103b: mov $0x2b0a6a561010,%rax 0x2b0a6a4d1045:

Hello, I am fairly new to using R and am trying to install it on my Linux machine, running Scientific Linux. I get through running 'configure' and 'make' OK, but when I run 'make check', I get the following error: make check make[1]: Entering directory `/home/gruchti/Programs/R-2.7.0/tests' make[2]: Entering directory `/home/gruchti/Programs/R-2.7.0/tests'

On 24 June 2011 21:13, Xin Tong Utoronto <x.tong at utoronto.ca> wrote: > I would like to know the status of the autovectorization support in LLVM. >  does LLVM have a loop dependence analysis, does LLVM have a infrastructure > for autovectorization ? etc. Not yet, but it's getting there... http://polly.grosser.es/ cheers, --renato

On 29 March 2011 12:35, Xin Tong Utoronto <x.tong at utoronto.ca> wrote: > *Project Description:* > > * > * > > LLVM has gained much popularity in the programming languages and compiler > industry from the time it is developed. Lots of researchers have used LLVM > as frameworks for their researches and many languages have been ported to > LLVM IR and interpreted,

I would like to know the status of the autovectorization support in LLVM. does LLVM have a loop dependence analysis, does LLVM have a infrastructure for autovectorization ? etc. Kind Regards Xin Tong -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20110624/3dc35318/attachment.html>

Hi All, I just started to learn compiling C codes for R usage, and got a problem when I was playing with my 'hello world' code. #include <R.h> #include <Rdefines.h> #include <Rmath.h> SEXP test( ) { double x; x=dnorm(1.0,0.0,1.0,1); printf(" x value is: %d \n",x); return(R_NilValue); } I got the result : x value is: -466460838 Could

On Wed, Feb 12, 2014 at 10:32:03PM +0800, Hurricane Tong wrote: > I seem to run into some trouble. > I succeeded in building the source code of Xapian in ubuntu, > but when I write a demo c++ application > > [snip] > I can't get it built. > > > hurricanetong at hurricanetong-VirtualBox:~/workspace$ g++ -L/usr/local/lib -lxapian-1.3 BuildIndexDemo.cpp Hmmm,

Hi Xin, Thank you for your reply! I have tried the 3 alias analyses you have mentioned on LLVM 3.5: 1) $ opt -globalsmodref-aa -aa-eval < xxx.bc > /dev/null (May-alias response 100%) 2) $ opt -tbaa -aa-eval < xxx.bc > /dev/null (May-alias response 100%) 3) $ opt -cfl-aa -aa-eval < xxx.bc> /dev/null (Unknown command line argument '-cfl-aa') It seems that they are not