Displaying 20 results from an estimated 10000 matches similar to: "gaussian error propagation"
2005 Jan 19
2
signif() generic
Dear list,
I'm trying to write a class for Gaussian error propagation of measured
values and their (estimated) errors,
> setClass("sec", representation(val="numeric", err="numeric"))
I've already successfully implemented basic arithmetics using mostly the
"Arith" group generics. But I'm running into trouble when trying to get
signif() to
2007 Dec 12
2
Need good Reference Material and Reading about Gaussian Copulas
Can anyone advise me on some pratical papers or books
On Gaussian Copulas? Anything in the genre of Copulas Dummies
Would be a help.
As simpe, and approachable with minimal pedantic style.
Thanks,
Neil
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2004 Oct 28
1
read.csv(stdin(),...) with sweave
hello,
i would like to read in a small amount of csv data directly from a
sweave-enabled latex document. i tried
\begin{Scode}{fig=FALSE,echo=TRUE}
timeval <- read.csv(stdin(),nrows=2)
t1,t2,t3,t4
24.23,26.79,23.47,23.97
\end{Scode}
but apparently the stdin() approach doesnt't work as I get
Writing to file test.tex
Processing code chunks ...
1 : echo term verbatim
Error: chunk 1
2001 Feb 27
2
win clients and sftp
I'm having trouble with users transferring files to a solaris box running
ossh v2.3.1p1 via sftp using ssh.com's windows client. The sftp client
appears not to respect the users umask, creating files with either mode
666 or 600. We're using version 2.4.0 of the windows client. Any ideas?
thanks,
-Brett
-----------------
Brett Longworth
Systems Manager
Department of Biology
2008 Oct 15
2
imap segfaults in dovecot 1.2 on logout
Hi Timo,
when logging out like
a001 logout
the imap child dies from signal 11. The back trace looks like this:
Program received signal SIGSEGV, Segmentation fault.
0xb7ed4991 in strcasecmp () from /lib/tls/i686/cmov/libc.so.6
(gdb) bt
#0 0xb7ed4991 in strcasecmp () from /lib/tls/i686/cmov/libc.so.6
#1 0x0806ab6c in command_unregister (name=0x815b9ab "LOGOUT") at commands.c:83
#2
2008 Oct 28
4
patch: list shared namespace
Hi,
I've been working on a patch for dovecot 1.2 from the Kolab branch
(http://hg.intevation.org/kolab/dovecot-1.2_kolab-branch/) that
implements listing of shared namespaces. I've got something that works
in some basic way but is still missing some pieces. See the attached
patch, which also contains some installation and configuration notes.
Implementation notes:
One of the main
2008 Oct 09
1
dovecot 1.2: dict no longer really support DICT_ITERATE_FLAG_RECURSE
Hi,
In dovecot 1.1, I could use DICT_ITERATE_FLAG_RECURSE when iterating over a
dict to retrieve all entries that start with a given prefix. This doesn't
seem to work anymore in the new dict implementation in dovecot 1.2. Looking
at the SQL queries actually generated, it seems as if dovecot 1.1 used to
generate queries that use pattern matching (key LIKE "my/prefix/%") whereas
2009 Feb 18
1
v1.2 can't set ACL to empty string
Hi *,
according to RfC4314 the rights argument to the setacl command might be
an empty string ("zero right characters"):
The third argument is a string containing an optional plus ("+") or
minus ("-") prefix, followed by zero or more rights characters.
existing clients (horde in particular) actually use this to remove all
rights from an user.
Currently
2008 Oct 02
2
Bug in dovecot 1.2 dict
Hi Timo,
Hi *,
in 1.2 the dict server (tested with sqlite backend) is somewhat broken.
It bails out regularly with "Fatal: dict: Socket already exists: ..."
(looks like a race condition as it doesn't fail always).
We discovered that this new code in dict-server.c seems to be the problem:
server->fd = net_listen_unix_unlink_stale(path, 64);
if (server->fd == -1) {
if
2008 Sep 05
2
Annotation plugin for dovecot
Hi,
as part of an effort to make dovecot usable as the IMAP component in the Kolab
Groupware system <http://kolab.org/>, we've started to develop a plugin that
implements the IMAP METADATA extension. The plugin is still under
development and development is focused on the plugin's use in Kolab, so it
will at first only implement what's immediately needed to achieve that
2008 Mar 25
1
Error propagation
Dear R-helpers,
I´m in the context of writing a general function for error propagation
in R.
There are somehow a few questions I would like to ask (discuss), as my
statistical knowledge is somewhat restricted.
Below is the function I wrote, the questions are marked.
Many thanks in advance.
propagate <- function(expr, varList, type = c("stat", "raw"), cov =
TRUE)
{
2009 Dec 06
3
estimate inverse gaussian in R
I have a one-variable data set in R.
The plot of histogram of my numerical variable suggests an inverse
gaussian distribution.
How can I obtain best estimation for the two parameters of inverse
gaussian based on my data?
Thanks.
--
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Sent from the R help mailing list archive at Nabble.com.
2007 Mar 21
2
Gaussian Adaptive Quadrature
Hi all,
Does anybody know any function that performs gaussian adapative quadrature integration of univariate functions?
Thanks in advance,
Regards,
Caio
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2005 Oct 21
1
finite mixture model (2-component gaussian): plotting component gaussian components?
Dear Knowledgeable R Community Members,
Please excuse my ignorance, I apologize in advance if this is an easy question, but I am a bit stumped and could use a little guidance.
I have a finite mixture modeling problem -- for example, a 2-component gaussian mixture -- where the components have a large overlap, and
I am trying to use the "mclust" package to solve this problem.
I need
2009 Feb 24
2
Syntax in taking log to transfrom the data to fit Gaussian distribution
Hi,
I have a data set (weight) that does not follow the Gaussian (Normal)
distribution. However, I have to transform the data before applying the
Gaussian distribution. I used this syntax and used log(weight) as:
posJy.model<-glm(log(weight) ~ factor(pos),
family=gaussian(link='identity'), subset=Soil=="Jy"). This syntax COULD NOT
transform the data. But if I transform the
2006 Feb 28
1
ex-Gaussian survival distribution
Dear R-Helpers,
I am hoping to perform survival analyses using the "ex-Gaussian"
distribution.
I understand that the ex-Gaussian is a convolution of exponential and
Gaussian
distributions for survival data.
I checked the "survreg.distributions" help and saw that it is possible to
mix
pre-defined distributions. Am I correct to think that the following code
makes
the
1999 Jun 08
1
inverse.gaussian, nbinom
Two questions:
1. inverse.gaussian is up there as one of the glm families, but do
people ever use it? There is no inverse.gaussian in the R
distribution family, and when I checked McCullagh & Nelder, it only
appeared twice in the book (according to subject index), once in the
table on p. 30 and once on p. 38 in a passing sentence. Is there a
good reference on this distribution?
2. When I
2003 Oct 22
1
: Prediction interval for a Gaussian family log-link model
Hi there fellow R-users,
Can anyone tell me how to build a prediction interval for a gaussian
log-link model for the reponse variable??
I can find the standard error of the predictions but I cant seem to find the
prediction interval. Is there a way I can calculate the
prediction interval from the standard errors??
Here's the example:
logX<-rnorm(100)
2017 Dec 11
2
Gaussian Process Classification R packages
Dear All,
I am struggling to find an R package which contains a function for building a Gaussian Process model for binary classification which may produce prediction intervals for predicted probabilities. I would be grateful if somebody could point me to such package.
Thank you very much in advance.
DK
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2012 Mar 19
1
fitting a histogram to a Gaussian curve
Hello,
I am trying to fit my histogram to a smooth Gaussian curve(the data
closely resembles one except a few bars).
This is my code :
#!/usr/bin/Rscript
out_file = "irc_20M_opencl_test.png"
png(out_file)
scan("my.csv") -> myvals
hist(myvals, breaks = 50, main = "My Distribution",xlab = "My Values")
pdens <- density(myvals, na.rm=T)
plot(pdens,