similar to: Internal error in 'ls' for pathological environments (PR#14035)

On Sun, Nov 1, 2009 at 6:02 AM, Peter Dalgaard <p.dalgaard at biostat.ku.dk> w= rote: > macrakis at alum.mit.edu wrote: >> >> nchar(with(list(2),ls())) gives an internal error. This is of course >> a peculiar call (no names in the list), but the error is not caught >> cleanly. >> >> It is not clear from the documentation whether with(list(2)...) is

Hello, I have list of 600K lists, each sublist a list of two elements, the first a character, the second a list of six named elements, some characters some numrics. LISTA (600K) (:= h) |__ List of two elements |__ Character |__ Named List of 6 elements (characters and numerics) This works, sip <- lapply(h,function(r) r[[2]][['sip']]) but I wish to unlist this

I've stumbled upon a small bug/inconsitency in do_External and do_dotcall: Here's an example: % LC_ALL=C R --vanilla < symname-bug.R R version 2.8.0 (2008-10-20) *snip* > options(error=expression(0)) > ## Call 'R_GD_nullDevice' with incorrect parameter count: > .Call("R_GD_nullDevice", 1) Error in .Call("R_GD_nullDevice", 1) :

The documentation for assignment says: In all the assignment operator expressions, 'x' can be a name or an expression defining a part of an object to be replaced (e.g., 'z[[1]]'). A syntactic name does not need to be quoted, though it can be (preferably by backticks). But the implementation allows assignment to a character string (i.e. not a name), which it

Dear R users, I am trying to connect R to data that is in a Access Database but I have problem with the construction of queries using special characters. I am using RODBC package. The following is working : > MyQuery<-paste("SELECT first( (DateHeure) ) , avg(NNO3_AT322_OUT_moy) AS Cond FROM Colonne_3 ") > Col3<-sqlQuery(con, query=MyQuery) > Col3

Hi, I want to read a text file into R with .Call(). So I define some NEW_CHARACTER() to store the chracters read and use SET_STRING_ELT to fill the elements. e.g. PROTECT(qNames = NEW_CHARACTER(10000)); char *foo; // This foo holds the string I want. while(foo = readLine(FN)){ SET_STRING_ELT(qNames, i, mkChar(foo))); } In this way, I can get the desired character from qNames. The only problem

Hi It seems that selecting an element of a factor will copy its levels (Ubuntu 13.04, R 3.0.2). Below is the output of a script that creates a factor with 10000 elements and then calls as.list() on it. The new object seems to use more than 700 MB, and inspection of the levels of the individual elements of the list suggest that they are distinct objects. Perhaps some performance gain could

Hi Gabriel, Thanks for your explanation, I totally understand that it is almost impossible to change the data structure of STRSXP. However, what I'm proposing is not about changing the internal representation, but rather about how we design and use the ALTREP API. I might do not state the workarounds clearly as English is not my first language. Please let me explain them again in detail.

Hi, I had a technical question about CHARSXP and garbage collection and couldn't find the answer in the R manual. The question is this. Are CHARSXP garbage collected like any other object, despite being part of the CHARSXP cache? i.e. is the cache being cleaned by garbage collection regularly and therefore, when I am in C code, do I need to protect a CHARSXP? Thanks! Holger [[alternative

i wonder about the following examples showing incoherence in how type conversions are done in r: x = TRUE x[2] = as.raw(1) # Error in x[2] = as.raw(1) : # incompatible types (from raw to logical) in subassignment type fix it seems that there is an attempt to coerce the raw value to logical here, which fails, even though as.logical(as.raw(1)) # TRUE likewise, x[2]

i wonder about the following examples showing incoherence in how type conversions are done in r: x = TRUE x[2] = as.raw(1) # Error in x[2] = as.raw(1) : # incompatible types (from raw to logical) in subassignment type fix it seems that there is an attempt to coerce the raw value to logical here, which fails, even though as.logical(as.raw(1)) # TRUE likewise, x[2]

Hello from Bioconductor, I'm developing a package to share R objects across clusters using boost library. The concept is similar to mmap package: https://cran.r-project.org/web/packages/mmap/index.html . However, I have a problem when I was trying to write Dataptr_method for the alternative string. Based on my understanding, the return value of the Dataptr_method function should be a vector

The newest version of R for Unix (version 0.50 alpha-1) is now (or will soon be) available from the following sites. NORTH AMERICA: http://lib.stat.cmu.edu/R/Alpha EUROPE: ftp://ftp.stat.math.ethz.ch/R/ ftp://statlab.uni-heidelberg.de/pub/mirrors/auckland/R/ JAPAN: ftp://ftp.u-aizu.ac.jp/pub/lang/R/ NEW ZEALAND: ftp://stat.auckland.ac.nz/pub/R/

I don't know about the technicalities, but Peter Dalgaard said the offending code also causes R to come to a stop using SUSE + WINE. Is it possible to run that lot on top of valgrind? Of course, it will probably take all day ... If not, I have a clue which might help. The problem seems to lie in the "sub" routine. In the original report I used -- cut here -- gctorture() u <-

Hello, I?m experimenting with ALTREP and was wondering if there is a preferred way to create an ALTREP wrapper vector without using .Internal(wrap_meta(?)), which R CMD check doesn?t like since it uses an .Internal() function. I was trying to create a factor that used an ALTREP integer, but attempting to set the class and levels attributes always ended up duplicating and materializing the

Dear list, I installed R 3.3.2 on a Red Hat Linux Enterprise 7.3 machine by adding the EPEL-repository and then installing it via yum. R starts up and seems to be doing fine at first sight. However, when I try to list the files in a directory with the command files <- list.files(path="/home/username/directory_name/", pattern="*.Rda",, full.names=T, recursive=FALSE) I get

I stumbled across one of those intermittent bugs where the code sometimes works and sometimes doesn't. Below is an example run showing a failure where a CHARSXP object was not properly created (by the sub function?). I was able to reproduce this error on three different R builds in fresh R sessions, but it sometimes takes a few start up R -> run code -> close R iterations for the

[some de-capitalization of *SXP done manually by mailing list maintainer ; the originally was caught as potential spam. MM] I have a little R program that crashes with the message xmalloc: out of virtual memory The code has a repeat{} loop that watches the sizes of some files. When there's an increase it updates things by reading the last 65 lines of each file, doing some

Hi Jiefei and Kylie, Great to see people engaging with the ALTREP framework and identifying places we may need more tooling. Comments inline. On Thu, Jul 18, 2019 at 12:22 PM King Jiefei <szwjf08 at gmail.com> wrote: > > If that is the case and you are 100% sure the reference number should be 1 > for your variable *y*, my solution is to call *SET_NAMED *in C++ to reset > the

Hello, As this little program illustrates, duplicating a STRSXP does not seem deep enough. require( inline ) fx <- cfunction( signature( x = "character"), ' SEXP y = PROTECT( duplicate( x ) ); int n = LENGTH(x); int nc = 0 ; char* p = 0 ; for( int i=0; i<n; i++){ p = (char*)( CHAR( STRING_ELT( y , i ) ) ); nc = strlen( p ) ; for( int j=0; j<nc; j++){ p[j] =