[Rd] lapply(NULL, ...) returns empty list

Dear R-devel, Is there a reason that lapply(NULL, ...) returns the empty list, rather than NULL? It seems intuitive to expect the latter, and rather counterintuitive that lapply(list(), ... ) returns the same value as lapply(NULL, ...). > lapply(list(), function(x) 1) list() > lapply(NULL, fun

[Rd] row.names in data.frame with row.names NULL

Dear R-devel, It appears that data.frame ignores row.names=NULL argument if it can guess the names from the first column. This behavior seems to contradict what the help page says, see the last sentence: If row names are not supplied in the call to 'data.frame', the row names are take

[Rd] names of return value of median

Dear R-devel, The median() function assigns a name, "NA", to its return value if the return value is NA and the input vector has names, otherwise the names attribute is NULL. This looks strange and inconsistent with the behavior of mean(). This inconsistency becomes a problem when median() is u

Re: [Rd] [R] shQuote and cat

;a\""') should be printing *echo "\"a\""* (asterics are not a part of the output) ____ From: Duncan Murdoch [EMAIL PROTECTED] Sent: Wednesday, July 23, 2008 2:38 PM To: Vadim Organovich Cc: r-devel@r-project.org Subject: Re: [Rd

Re: [Rd] [R] shQuote and cat

fails. Now, by cat() being the inverse of shQuote() I mean printing the same literal as it goes into shQuote, quotes included: > cat(shQuote("a"), '\n') "a" whereas > cat("a", '\n') a ## no quotes If cat() is not the inverse of shQuote() in

[Rd] C++ complains abouct Rprintf signature

Dear R-devel, My g++ complains about the first argument to Rprintf being non-const char *. For example when compiling the line Rprintf("hello world\n"); the following warning is emitted: warning: deprecated conversion from string constant to 'char*' Is there a reason for the non-const? It is

Re: [Rd] clean-up actions after non-local exits

onday, April 14, 2008 6:57 PM To: Vadim Organovich Cc: r-devel@r-project.org Subject: Re: [Rd] clean-up actions after non-local exits On Mon, 14 Apr 2008, Vadim Organovich wrote: > This is good, thanks! > > I'd like to be able to make sure that the resource is released in conroll

Re: [Rd] clean-up actions after non-local exits

ct? Thanks, Vadim From: Duncan Murdoch [EMAIL PROTECTED] Sent: Monday, April 14, 2008 3:53 PM To: Vadim Organovich Cc: r-devel@r-project.org Subject: Re: [Rd] clean-up actions after non-local exits On 14/04/2008 4:33 PM, Vadim Organovich wrote: > Dear R-devel, > > > > Some

[Rd] clean-up actions after non-local exits

Dear R-devel, Some time ago I started a thread that boiled down to clean-up actions after non-local exits in R, see below. I wonder if there has been any progress on this? R-ext 2.6.1 doesn't say much on the subject. How, for example, do people deal with a situation where their C (C++) func

[Rd] error loading library

Hi, I am debugging intermittent crashes of R that seem to happen when multiple R sessions nearly summaltaneously load same dll-based library. I have R and my libraries installed on a network drive (everything is Windows). The drive is visible from a farm of servers. I have an R script, foo.R, t

Re: [Rd] how to write dput-able objects

From: Gabor Grothendieck [EMAIL PROTECTED] Sent: Monday, February 25, 2008 12:16 PM To: Vadim Organovich Cc: r-devel@r-project.org Subject: Re: [Rd] how to write dput-able objects You might want to look at the proto package. proto objects won't immediately dput either but it would n

[Rd] how to write dput-able objects

Hi, One way of doing object-oriented programming in R is to use function environment to hold object's data, see for example @Article{Rnews:Chambers+Lang:2001a, author = {John M. Chambers and Duncan Temple Lang}, title= {Object-Oriented Programming in {R}}, journal = {R Ne

[Rd] forcing gc() to do its work

Hi, At some points of my computations I want gc() to try really hard and collect as many objects as possible even though the triggering limits are not hit. Will it help if I temporarily set the limits to some small values, call gc() and then reset them back to their original values? What variab

[Rd] crash in library(gbm) was: Rscript temp file

From: [EMAIL PROTECTED] [EMAIL PROTECTED] On Behalf Of Vadim Organovich [EMAIL PROTECTED] Sent: Friday, February 15, 2008 2:29 PM To: r-devel@r-project.org Subject: [Rd] Rscript temp file Hi, It seems that Rscript creates a temporary file to store the commands passed with the -e option, under

[Rd] Rscript temp file

Hi, It seems that Rscript creates a temporary file to store the commands passed with the -e option, under normal circumstances the temp file gets deleted at some point. Here is an example of a call I use: q:/R/R-2.6.1/bin/Rscript.exe -e ".libPaths(\"q:/R/vogranovich/library\"); params <- lis