On Sat, 12 Mar 2005, Erin M Simpson wrote:
I am looking for code that allows for a more flexible negative binomial
model (similar to Stata's gnbreg).
Your subject line is not clear to me: Stata appears to fit a negative
binomial model, the point being that it is not a glm as fitted by glm.nb.
hi, all
i hava a dataset formated as follow:
x1 y1 z1
x2 y2 z2
x3 y3 z3
...
how to cluster it with hclust?
and the draw the data with color of cluster?
thank you in advance!
best!
xpsun
Hi R users:
I am using R 2.01. over a LINUX(Scientific Linux CERN)
platform and I got the following problem:
It takes too much time (more than 6 hours, because I
stop the process) to read a
270MB database. I am using read.table() function.
Is there any workaround to read faster a big data base?
I managed to parse more complex XML files as well. The trick was to
manually determine the position of the child nodes of interest, after
which they can be parsed in a loop. For example:
require(XML)
doc - xmlTreeParse(file.xml,getDTD=T,addAttributeNamespaces=T)
r - xmlRoot(doc)
#find the nodes
Werner Wernersen wrote:
Hi!
I've searched quite a while and this is probably a
very easy question: How do I
prevent a new hist() histogram from clearing the chart
window before drawing?
I would like to have several histograms simply drawn
on each other in one chart...
See either ?par
De: Depiereux Constant [EMAIL PROTECTED]
Date: 12 mars 2005 09:44:08 GMT-05:00
À: r-help@stat.math.ethz.ch
Objet: [R] New user of R on Mac OS X - Please help
Brand new Mac OS X user, I am transfering my R stuffs from my windows
machine.
When porting some of my functions, I got messages such as
1. Read the R Data Import/Export manual.
2. Check the R-help archive, as this question has been asked and answered
many times.
Andy
From: Kenneth Cabrera
Hi R users:
I am using R 2.01. over a LINUX(Scientific Linux CERN)
platform and I got the following problem:
It takes too much time
I whole-heartedly endorse Prof. Ripley's suggestion to write down
the log(likelihood) and use optim; I've done that many times with
seemingly good results. For confidence intervals, the best procedure is
to use 2*log(likelihood ratio) being approximately chi-square. If you
are
Hi. Another, slightly more updated, link to the same info is:
http://bioconductor.org/, under the Developmental Packages under Software,
contains Rdbi version 1.1.1 and RdbiPgSQL version 1.1.3. I am running them
under MacOSX and they work beautifully. I am using it to pull data on
PostgreSQL
From: Wensui Liu
I am sorry that I did not state my question clearly.
What I mean by data manipulation includes sort, merge, aggregate,
transpose,
R has functions for doing those: sort(), merge(), aggregate(), and t(),
respectively.
data export and import, format, date time handle,
On Fri, 11 Mar 2005 09:09:15 -0800, Andrew Stoneman
[EMAIL PROTECTED] wrote :
In trying to use simplex() from the boot package, I have run into a
situation that doesn't seem like it should be possible. It is claiming
that it has solved the LP, but returns a vector of all zeros, which
does not
I've been looking at the base and Design libraries and it is unclear to me the
best way to approach doing cross-validation. I'm interested in using temporal
(I have five years of data), spatial (I've divided my data set up into 5 blocks
that make sense and have a block variable attached to my
Does anyone know how to suppress the iterations of nnet training with
nnet library?
Thank you so much!
--
WenSui Liu, MS MA
Senior Decision Support Analyst
Division of Health Policy and Clinical Effectiveness
Cincinnati Children Hospital Medical Center
From: Wensui Liu
Does anyone know how to suppress the iterations of nnet training with
nnet library?
1. That's _package_, not _library_.
2. See the `trace' option in ?nnet.
Andy
Thank you so much!
--
WenSui Liu, MS MA
Senior Decision Support Analyst
Division of Health Policy and
Background:
OS: Linux Mandrake 10.1
release: R 2.0.0
editor: GNU Emacs 21.3.2
front-end: ESS 5.2.3
-
Colleagues
I am using:
trellis.device(postscript, file=../figures/name.ps)
.code to generate the trellis display here
graphics.off()
to create a
Thanks Andy
out- xyplot()
print(out)
did the trick nicely.
Sam
Sam McClatchie,
Biological oceanography
South Australian Aquatic Sciences Centre
PO Box 120, Henley Beach 5022
Adelaide, South Australia
email [EMAIL PROTECTED]
Telephone: (61-8) 8207 5448
FAX: (61-8) 8200 2481
Research
Wensui Liu liuwensui at gmail.com writes:
: transpose, data export and import, format, date time handle, and so
Regarding just the date and time classes part of your question, an
article in R News 4/1 discusses that.
__
R-help@stat.math.ethz.ch
If you use par(new=TRUE), you are overlaying one graph on top of the
other. In which case, make sure your xlim and ylim are correctly set.
Another way is to split the plotting window. For example
par(mfrow=c(2,3))
for(i in 1:6) hist( rnorm(100), main=paste(Histogram, i))
See help(par) for
On Sun, 13 Mar 2005 15:28:54 -0700
Trevor Wiens [EMAIL PROTECTED] wrote:
I've been looking at the stats and Design libraries and it is unclear to me
the best way to approach doing cross-validation. I'm interested in using
temporal (I have five years of data), spatial (I've divided my data
McClatchie, Sam (PIRSA-SARDI) wrote:
Background:
OS: Linux Mandrake 10.1
release: R 2.0.0
editor: GNU Emacs 21.3.2
front-end: ESS 5.2.3
-
Colleagues
I am using:
trellis.device(postscript, file=../figures/name.ps)
.code to generate the trellis display here
Can you help me interpret the output I get with polymars?
I'd like to find a regression model to predict 2 dependent variables (then
called Y1 and Y2) with 2 independent variables (then called X1 and X2).
Here is the output:
polymars(responses = data[, 13:14], predictors = data[, 2:3])
Model
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