Hi all:
we have noticed for quite a while that certain errors cannot be handled
by R try, tryCatch etc blocks, but it was fairly difficult to understand
what were the conditions for this incorrect behaviour. Finally I stabbed
across a very understandable case, which is outlined in the (runnable)
POSIXlt is a list and it is not a list of dates or times, it is a list
of
x - as.POSIXlt(Sys.Date())
names(x)
[1] sec min hour mday mon year wday yday
isdst
So if you want to match these things, you should use POSIXct or any
other numeric-based format (as POSIXct is just a double
-
From: Dirk Eddelbuettel [mailto:e...@debian.org]
Sent: 07 May 2010 15:43
To: Sklyar, Oleg (London)
Cc: r-devel@r-project.org
Subject: Re: [Rd] Bug in R -e command
On 7 May 2010 at 15:23, Sklyar, Oleg (London) wrote:
| Hi all:
|
| since about a month we encountered a problem with R -e
Hi all:
since about a month we encountered a problem with R -e command: spaces
in the command of R -e command are no more tolerated. This same
issue affects 2.11 patched (05-05-2010), 2.10.1, and current devel (at
least the one of two weeks ago).
(I skip the mid of the printouts, replaced with
Because there is no second thread to do that, R is single threaded. The
gc could only be run from within another R API command or macro, but
there is none in between.
Best
Oleg
Dr Oleg Sklyar
Research Technologist
AHL / Man Investments Ltd
+44 (0)20 7144 3803
oskl...@maninvestments.com
Dear list subscribers,
this is posted in appreciation of the level of skill that subscribers to this
mailing list enjoy and in no way to abuse it.
We are looking to hire a Research Developer with extensive R and/or python
development skills. If interested (below), please contact me directly on
Hi all,
assume the following problem: a function call takes a function object
and a data variable and calls this function with this data on a remote
host. It uses serialization to pass both the function and the data via a
socket connection to a remote host. The problem is that depending on the
to the local frame you can just attach a new
smaller environment after building the function.
Duncan Murdoch
Sklyar, Oleg (London) wrote:
Hi all,
assume the following problem: a function call takes a
function object
and a data variable and calls this function with this data
on Unix alikes possibly:
env F77=/path/to/ifort ./configure --prefix=/where/to/install
Dr Oleg Sklyar
Research Technologist
AHL / Man Investments Ltd
+44 (0)20 7144 3107
oskl...@maninvestments.com
-Original Message-
From: r-devel-boun...@r-project.org
If you use JNI or rJava, you should start the VM with -Xrs argument,
otherwise the descibed things happen as Java catches the Ctrl-C
interrupt
Dr Oleg Sklyar
Research Technologist
AHL / Man Investments Ltd
+44 (0)20 7144 3107
oskl...@maninvestments.com
-Original Message-
From:
Dear list.
It is a known issue that accessing slots of S4 objects and in particular
accessing .Data slots is slow in R. However, what surprises me are two
things demonstrated in the code below (runnable with 'inline', my times
are in the comments):
- copying data out of a large 3x1e7 .Data slot
Dear list.
Has anybody had any issues with ROracle, namely consistently leading to
a segmentation fault? One of our oracle databases seems to have certain
issues at the moment (do not know what exactly though) and if that one
is queried ROracle definitely fails with a segmentation fault. Any
typo as simple as %S instead of %s segfaults R devel:
*** R 2.9.0 (svn -r 47821) [/share/research/R-devel/20090203/lib64/R]
***
sprintf(%S%d, aaa, 1)
*** caught segfault ***
address 0x8000, cause 'memory not mapped'
Traceback:
1: sprintf(%S%d, aaa, 1)
Possible actions:
1: abort (with core
Given S4 methods [ and [-, how do I write the Rd-file usage clause for
the latter one?
What I have now is:
\S4method{[}{TimeSeries,TimeDate,missing}(x, i, j, ..., drop)
\S4method{[-}{TimeSeries,TimeDate,missing,ANY}(x, i, j, ..., value)
which results in the following output:
## S4 method
Try using setGeneric(predict) without further arguments, this should
work as it will take the existing 'predict' definition and convert it
into S4 generic. This works nicely for me for all plot, print etc
methods
* R
*** R 2.9.0 (svn -r 47821) [/share/research/R-devel/20090203/lib64/R]
***
statistical plots -- at least that's
what our experience shows.
Agree completely.
Cheers,
Simon
-Original Message-
From: Simon Urbanek [mailto:simon.urba...@r-project.org]
Sent: 19 February 2009 14:34
To: Sklyar, Oleg (London)
Cc: Friedrich Leisch; r-devel@r-project.org
Two ideas:
1) A library for interactive plots in R
R lacks functionality that would allow displaying of interactive plots with two
distinct functionalities: zooming and panning. This functionality is extremely
important for the analysis of large, high frequency, data sets spanning over
large
-
From: Simon Urbanek [mailto:simon.urba...@r-project.org]
Sent: 19 February 2009 14:34
To: Sklyar, Oleg (London)
Cc: Friedrich Leisch; r-devel@r-project.org;
manuel.eugs...@stat.uni-muenchen.de
Subject: Re: [Rd] Google Summer of Code 2009
On Feb 19, 2009, at 6:38 , Sklyar, Oleg (London
, Oleg (London)
Cc: Simon Urbanek; Friedrich Leisch;
manuel.eugs...@stat.uni-muenchen.de; r-devel@r-project.org
Subject: Re: [Rd] Google Summer of Code 2009
On Thu, Feb 19, 2009 at 3:47 PM, Sklyar, Oleg (London)
oskl...@maninvestments.com wrote:
I do think there is a need for an interactive
Investments Ltd
+44 (0)20 7144 3107
oskl...@maninvestments.com
-Original Message-
From: Yihui Xie [mailto:xieyi...@gmail.com]
Sent: 19 February 2009 16:20
To: Sklyar, Oleg (London)
Cc: Liviu Andronic; Friedrich Leisch; Simon Urbanek;
manuel.eugs...@stat.uni-muenchen.de; r-devel@r
...@maninvestments.com
-Original Message-
From: John Chambers [mailto:j...@r-project.org]
Sent: 11 February 2009 20:40
To: Sklyar, Oleg (London)
Cc: r-devel@r-project.org
Subject: Re: [Rd] setClassUnion with numeric; extending class union
So, I was intrigued and played around a bit
Dear list:
I am looking for a good way to create an S4 class that would extend
numeric, but would allow NULL instead of data as well. As far as I can
see there is no way at the moment to do that, but please correct me if I
am wrong. The best solution I came up with so far was the following (it
Hi,
this is not exactly a developer question, but maybe you have noticed
similar behaviour before. For quite some time R and Rmpi were working
perfectly for me until one day they just stopped doing so without any
changes in the configs. R still spawns jobs as requested, and if they
are small they
- R is not multithreaded (or so it was) and thus race condition cannot
occur
- I would think there is no call to GC at the time of assignment of the
return value to a variable. GC is only called within other R calls as R
as mentioned above is not multithreaded
Most likely issue is your code
Because there is a % sign, which is stripped out by LaTeX used to build
the help system as a comment. Just look at how your example code is
output -- the string is unterminated because the matching quote is
masked by % latex comment
Dr Oleg Sklyar
Research Technologist
AHL / Man Investments Ltd
to convert 'testPosixVal' to class POSIXlt
Dr Oleg Sklyar
Research Technologist
AHL / Man Investments Ltd
+44 (0)20 7144 3107
oskl...@maninvestments.com
-Original Message-
From: Simon Urbanek [mailto:simon.urba...@r-project.org]
Sent: 14 January 2009 01:51
To: Sklyar, Oleg (London)
Cc: r
Thank you Simon.
Dr Oleg Sklyar
Research Technologist
AHL / Man Investments Ltd
+44 (0)20 7144 3107
oskl...@maninvestments.com
-Original Message-
From: Simon Urbanek [mailto:simon.urba...@r-project.org]
Sent: 14 January 2009 16:11
To: Sklyar, Oleg (London)
Cc: r-devel@r
Dear List:
Sorry for posting maybe a trivial question, but I have a basic
understanding problem. If I have say pack1 and pack2, two R packages,
and pack2 depends on and imports pack1 fully (as in the code below), is
there a way to make all the functionality of pack1 available for the
global and
probably will have to do, reexport everything.
Dr Oleg Sklyar
Research Technologist
AHL / Man Investments Ltd
+44 (0)20 7144 3107
oskl...@maninvestments.com
-Original Message-
From: Martin Morgan [mailto:mtmor...@fhcrc.org]
Sent: 13 January 2009 16:31
To: Sklyar, Oleg (London)
Cc: r-devel
[mailto:mtmor...@fhcrc.org]
Sent: 13 January 2009 16:31
To: Sklyar, Oleg (London)
Cc: r-devel@r-project.org
Subject: Re: [Rd] particulars of importing/loading libraries
Hi Oleg --
Sklyar, Oleg (London) oskl...@maninvestments.com writes:
Dear List:
Sorry for posting maybe a trivial question
You should not have started with R/C API without reading this (first
link in google): Writing R Extensions. For your particular question
you want pages 72+ and sections 5.9.3 and 5.9.4, possibly further as
well
Dr Oleg Sklyar
Research Technologist
AHL / Man Investments Ltd
+44 (0)20 7144 3107
In some cases rounding problems lead to creation of logically incorrect
times in POSIXlt when converting from POSIXct.
## everything works fine for the following values:
x = c(1223972160.0, 1223982660.0, 1223994660.)
## adding 0s for the epoch
x = x + as.POSIXct(1970-01-01 00:00) -
You will need to define several for different combinations of i and j
types e.g. ANY,missing; ANY,ANY; missing,ANY or possibly for types like
integer, character and logical more or less in the following way:
setMethod([, signature(x=haplogList, i=ANY,j=ANY),
function(x, i, j, ...,
Hello everybody,
it looks like the presense of some (do know know which) S4 methods for a
given S4 class degrades the performance of xtfrm (used in 'order' in new
R-devel) by a factor of millions. This is for classes that ARE derived
from numeric directly and thus should be quite trivial to
3107
[EMAIL PROTECTED]
-Original Message-
From: John Chambers [mailto:[EMAIL PROTECTED]
Sent: 09 September 2008 15:11
To: Sklyar, Oleg (London)
Cc: R-devel@r-project.org
Subject: Re: [Rd] 'xtfrm' performance (influences 'order'
performance) in R devel
No definitive answers
Oleg Sklyar
Research Technologist
AHL / Man Investments Ltd
+44 (0)20 7144 3107
[EMAIL PROTECTED]
-Original Message-
From: John Chambers [mailto:[EMAIL PROTECTED]
Sent: 09 September 2008 15:11
To: Sklyar, Oleg (London)
Cc: R-devel@r-project.org
Subject: Re: [Rd] 'xtfrm' performance
a reference to
xtfrm and thus would not cause this infinite loop
Dr Oleg Sklyar
Research Technologist
AHL / Man Investments Ltd
+44 (0)20 7144 3107
[EMAIL PROTECTED]
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Sklyar,
Oleg (London)
Sent: 09 September
To: Sklyar, Oleg (London)
Cc: R-devel@r-project.org
Subject: Re: [Rd] 'xtfrm' performance (influences 'order'
performance) in R devel
Sklyar, Oleg (London) wrote:
Ha, defined xtfrm for TimeDate, works instantly (xtfrm
is already a
method). However, it won't be taken up by order
Dear Martin,
I understand the reasons behind PDF removal, but I actually added a
description of the problem with R2.7+ before... (I cannot select which
email client I use in the office).
Now the problem remains and here is the illustration. The reason for
setting xlim beyond the data range can
As I haven't got any replies to my earlier posts about incorrect tick
positions in plot and matplot, here is the simplest patch to correct
this issue (it fixes both plot with xlim/ylim and matplot). The plot.R
was unchanged between 2.7 and current R-devel. It would be great if the
patch could be
The behaviour of the plot function when used with xlim/ylim and the
matplot function as in the following simple example changed between
R2.6.1 and 2.7.0+ producing ugly plots in the new versions. In case of
plot it looks like the pretty function is called with wrong arguments
(i.e. range of
Hi everybody,
any idea why showMethods fails with the following error when printTo is
set to false, i.e. to return the output as a character vector. It works
fine if printTo is left default as seen below. The behaviour is
consistent for any method I tried. stdin() generally works fine on this
Thanks for a good tip.
Dr Oleg Sklyar
Technology Group
Man Investments Ltd
+44 (0)20 7144 3803
[EMAIL PROTECTED]
-Original Message-
From: Prof Brian Ripley [mailto:[EMAIL PROTECTED]
Sent: 20 August 2008 13:29
To: Sklyar, Oleg (London)
Cc: [EMAIL PROTECTED]
Subject: Re: [Rd
EBImage is dynamically linked against GTK, which includes cairo
libraries, so those are installed along with GTK. Cairo seems to be
statically linking to libcairo.dll.a. I would assume that if it is
linked statically it should not get confused with a shared library
present elsewhere in the path,
July 2008 11:29
To: Sklyar, Oleg (London)
Cc: Henrik Bengtsson; R-devel
Subject: Re: [Rd] Clash between 'Cairo' and 'EBImage'
packages on Windows
On Mon, 21 Jul 2008, Sklyar, Oleg (London) wrote:
EBImage is dynamically linked against GTK, which includes cairo
libraries, so those
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