Displaying 20 results from an estimated 3000 matches similar to: "nmath bug (PR#762)"
2012 Jan 27
2
The following code (using rgamma) hangs
Hi,
I'm seeing something that may be a bug in R's standalone math library,
which is packaged by Debian as r-mathlib. I reported it to the Debian BTS
as http://bugs.debian.org/657573
I'm using Debian squeeze, and the code was tested with r-mathlib 2.11.1-6
(default on stable) and 2.14.1-1 (from testing/unstable).
I summarize this report below. The following code with the R math
2005 Mar 17
1
Varying grid.rect in different panels of a Lattice plot
Dear r-help,
Sleep-deprivation from having 2 youngsters under 2 around the house is
fuzzing my brain, so please be gentle if the answer to this query is obvious!
In the example below, I'm trying to use grid.rect to add grey rectangles to
the panels of a lattice plot to indicate which months spawning occurred of
a (very cute) native Tasmanian fish. The fish in the two lakes spawned at
2000 Nov 08
0
Re: [R] Strange means of numbers drawn from rpois (PR#730)
Kjetil Kjernsmo <kjetil.kjernsmo@astro.uio.no> writes:
> On 8 Nov 2000, Peter Dalgaard BSA wrote:
>
> >> > range(sapply(1:2000, function(n) mean(rpois(10000, c(15,15+1e-8)))))
> >> [1] 14.8692 15.1200
> >
> >AHA! Spotted, I think.
>
> Wow! Great, that was fast!
>
> >It is possible to return from rpois in step N,
> >in which case
2011 Aug 04
1
How to seed the R random number generator in C (standalone) with an instance of .Random.seed
hello all,
I use the R standalone math library in my own C program, and the default R
random number generator can be seeded with
set_seed(const unsigned int, const unsigned int).
How could I seed the RNG with an instance of .Random.seed ?
I would need this or a similar workaround for debugging purposes.
More precisely, I use the default R random number generator to sample from
various
2000 Nov 08
3
Strange means of numbers drawn from rpois
Dear all,
I think I must be going crazy.... If I do
> mean(rpois(1000000, 14))
I get:
[1] 13.50420
and again:
> mean(rpois(1000000, 14))
[1] 13.49896
> mean(rpois(1000000, 14))
[1] 13.50161
> mean(rpois(1000000, 15))
[1] 14.49250
> mean(rpois(1000000, 15))
[1] 14.49897
> mean(rpois(1000000, 14.5))
[1] 13.99689
> mean(rpois(1000000, 14.5))
[1] 13.9963
This was on a
platform
2004 Sep 09
2
Skipping panels in Lattice
Dear all,
I wish to generate a lattice boxplot which skips an empty cell in a design.
I have trawled r-help, scruitinized xyplot(lattice) help page, and merrily
reproduced examples of using skip from a couple of previous r-help queries
and the example given in Pinheiro & Bates. But I must be missing something...
Here's an example (running R 1.9.1 on Win2k):
# generate some data
df1
2001 Jan 08
0
cleaning up the BUGS list
In looking over the bugs list, it seems to me that most of them are
things we can no longer do anything about, because they are on old
versions or broken systems or were features or ....
There are now so many they obscure the bugs needing attention.
I am about the remove the following. If anyone thinks they are still
relevant, could you please send a follow-up to R-bugs with details under
1.2.0
2006 Mar 03
1
Fwd: Re: calling R's library using C
Sorry, forgot to switch the header to the R group....
--- Globe Trotter <itsme_410 at yahoo.com> wrote:
> Date: Thu, 2 Mar 2006 19:35:21 -0800 (PST)
> From: Globe Trotter <itsme_410 at yahoo.com>
> Subject: Re: [R] calling R's library using C
> To: Dirk Eddelbuettel <edd at debian.org>
>
> Hi, Dirk:
>
> Thanks for all the help. I thought I would
1999 Apr 21
1
Does smbtar have a size limit ?
Hello. I'm trying to use smbtar/smbclient (2.0.3) to copy
an NTFS share on an NT Server, onto a Solaris 2.5 system.
The NTFS partition is 10Gb. At the 2Gb mark, the tar stops.
No errors, the file just stops. The process (smbtar) returns.
Is this a problem with Solaris 2.5 ? I believe it is, and if
I upgrade to 2.6, I can create larger tar files. However, does
anyone know if
1999 Nov 15
1
Quotas and Netatalk Support ?
I've just noticed that --with-netatalk and --with-quotas are options to
configure for samba. Is anyone using these options on Solaris 7, and what
do they do and how well ?
I'd really like to display a users quota as "disk size" and their remaining
space as "disk free". Is --with-quotas the right way to go about this ?
I also run netatalk. Do I need to use
2003 Aug 26
4
Viewing function source
I know I should probably RTFM for this question, but could someone tell me
if R supports the idea of "viewing source" on any particular function you
want to use?
If I want to "view source" on the rpois() function, for example, can I do
somethink like:
source(rpois)
To see how the function is implemented?
Regards,
Paul Meagher
Datavore Productions
50 Wood Grove Drive
2005 Feb 22
1
include C functions from nmath in my own C functions
Hi:
I am writing a C program which need a gamma random
number generator. I download the source file of R and
compile, make it myself. There is a "rgamma.c"
function in the installing directory of
R("/home/zhliu/Backup/R-2.0.1/src/nmath/rgamma.c"). My
question is how to call this function in my own
program which is in another directory. I can not copy
this "rgamma.c"
2002 May 24
1
nmath standalone again
Hi !
I have again problem with nmath standalone sources package.
Following the suggestion of Reid, I did control that
/usr/local, in which I copied the dir standalone, is listed in
/etc/ld.so.conf.
However, because of my big ignorance, I don't understand how I have to do
the linkage to Rmath during the compilation of a source.
What does it mean:
"and link against -lRmath" in
2002 May 23
1
nmath standalone
Dear all,
I'm trying to use the as a standalone package the nmath sources.
In R-1.4.1/src/nmath/standalone, in linux operating system I made 'make
shared' to obtain libRmath.so. then I copied the dir standalone, where
there is libRmath.so in /usr/local.
I tried to compile test.c with cc test.c but I obtain this error message
/tmp/ccsTxu7U.o: In function `main':
2004 Apr 14
1
question about /nmath/standalone
Hello,
I can't link a c code with Mathlib according to introduction of R
manual "Writing R Extensions", page 60.
It is written :
"It is possible to build Mathlib, the R set of mathematical functions
documented in
'Rmath.h?, as a standalone library 'libRmath? under Unix and Windows. (This
includes
the functions documented in Section 5.7 [Numerical analysis
2005 Jun 25
1
comment in src/nmath/dgamma.c
Hi,
In src/nmath/dgamma.c the comment at the top says
* DESCRIPTION
*
* Computes the density of the gamma distribution,
*
* 1/s (x/s)^{a-1} exp(-x/s)
* p(x;a,s) = -----------------------
* (a-1)!
*
* where `s' is the scale (= 1/lambda in other parametrizations)
* and `a' is the shape parameter ( = alpha in
2005 Aug 11
1
include C functions from nmath in my own C functions
Hi:
I followed the README in src/nmath/standalone/
to make the use the command "make shared" to make the
libRmath.so file. I also add the directories containg
libRmath.so to LD_LIBRARY_PATH by using command
"export
D_LIBRARY_PATH=$LD_LIBRARY_PATH:$/home/zhliu/Backup/R-2.0.1/src/nmath/standalon
e
"
However, when I try to run the following codes by the
command
2002 Jan 24
2
random number generation issues with r and compiled C code
Dear People,
I have been writing a simulation routine that is currently entirely
written in c++. I've been using the R standalone math library to give me
random number generation for this. However, I have had to set the seed
myself, and I am using
set_seed(time(NULL), clock)
for every call to unif_rand().
However, this works really badly. The random numbers aren't uniform at
all. Does
2010 Feb 10
1
Copyright on src/nmath/qnorm.c
At the top of src/nmath/qnorm.c it is stated:
* Copyright (C) 1998 Ross Ihaka
* Copyright (C) 2000--2005 The R Development Core Team
* based on AS 111 (C) 1977 Royal Statistical Society
* and on AS 241 (C) 1988 Royal Statistical Society
The routine is in fact an f2c'd version of AS241 from StatLib:
http://lib.stat.cmu.edu/apstat/241 and http://lib.stat.cmu.edu/apstat/
It
2002 May 31
1
Two questions about nmath
Hi !
1) First question.
Excuse me for trouble with the same question. I still have problems
with the compilation of test.c in src/nmath/standalone.
I did follow the instructions you gave me but I still receive this message
[root at my standalone]# cc -o test test.c -L/usr/local -lRmath
/usr/local/libRmath.so: undefined reference to `log'
/usr/local/libRmath.so: undefined reference to