The score test looks at the effect of adding extra columns to the model matrix.
The function glm.scoretest takes the fitted model object as the first argument
and the extra column, or columns, as the second argument. Your x2 argument has
length only 3. Is this really what you want? I would h
Greeting R Community,
I'm trying to learn Logistic Regression on my own and am using An Introduction
to Logistic Regression Analysis and Reporting (Peng, C., Lee, K., & Ingersoll,
G. ,2002). This article uses a Score Test Stat as a measure of overall fit for
a logistic regression model. The
Hi Bo,
See the following blog post:
http://thetarzan.wordpress.com/2011/06/11/clustered-standard-errors-in-r/
http://thetarzan.wordpress.com/2011/06/11/clustered-standard-errors-in-r/
where I calculate clustered standard errors in R. The result is the same as
the "cluster" command in Stata. I
thank you very much for your advice, Thomas! Extremely helpful!
Cheers!
Tiago
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Sent from the R help mailing list archive at Nabble.com.
_
Dear R experts,
I am resending my questions below one more time
just in case someone out there could help
but missed my email.
I don't think my questions are too hard.
I am most concerned about the transformation function.
See below.
Thanks,
Clayton
Hello,
I have a few questions, regarding th
On Sun, Jun 12, 2011 at 12:44 PM, Tiago Pereira
wrote:
> The test I am working on has an asymptotic 0.5*chi2(1)+0.5*chi2(2)
> distribution, where numbers inside parenthesis stand for the degrees of
> freedom. Is is possible to compute quickly in R the cumulative distribution
> of that distributio
Hello,
The test I am working on has an asymptotic 0.5*chi2(1)+0.5*chi2(2)
distribution, where numbers inside parenthesis stand for the degrees of
freedom. Is is possible to compute quickly in R the cumulative distribution
of that distribution?
Thanks in advance.
Tiago
--
View this message in co
Hi Matt,
Did you try reading the documentation for factanal()? You can pull it
up by typing: help("factanal")
These give basically identical results using the raw data, the
covariance matrix, and the correlation matrix.
factanal(x = mtcars, factors = 3)
factanal(factors = 3, covmat = cov(mtcars
Can someone please direct me to how to run a factor analysis in R by first
inputting a correlation matrix? Does the function "factanal" allow one to read
a correlation matrix instead of data vectors?
Thanks,
Matt.
[[alternative HTML version deleted]]
> Date: Sat, 11 Jun 2011 19:57:47 +0200
> Subject: Re: [R] Amazon AWS, RGenoud, Parallel Computing
> From: lui.r.proj...@googlemail.com
> To: marchy...@hotmail.com
> CC: r-help@r-project.org
>
> Hello Mike,
>
[[elided Hotmail spam]]
> Best to my k
Dear R experts,
I have a problem that is a related to the question raised in this earlier post
https://stat.ethz.ch/pipermail/r-help/2007-January/124064.html
My situation is different in that I have only 2 predictors
(coordinates x,y) for local regression but a number of global
("parametric")
Hi Rob,
This list is primarily intended for questions about how to do things in R,
so you're more likely to get a helpful response elsewhere. You might want to
try some place like the Cross-Validated web site (
http://stats.stackexchange.com/) for general statistics and data analysis
questions.
B
Hello Mike,
thank you very much for your response!
Best to my knowledge the sort algorithm implemented in R is already
"backed by C++" code and not natively written in R. Writing the code
in C++ is not really an option either (i think rGenoud is also written
in C++). I am not sure whether there re
I have revised my earlier question to and would be grateful for any
comments!
--
Subject: Is there an implementation of loess with more than 3 parametric
predictors or a trick to a similar effect?
Dear R experts,
I have a problem that is a related to the question raised in this earlier
On 06/10/2011 02:29 PM, Richard M. Heiberger wrote:
I am interested in running R commands asynchronously.
My first choice is in the same R session that I am currently in.
Here, the goal would be to run something like
RunAsynchSameSession(myfunction(), "outputname.rda")
Once RunAsynchSame
On Sat, Jun 11, 2011 at 5:31 PM, Layman123 wrote:
> Thank you! Of course, I will read the posting guidelines. A subscriber helped
> me via e-mail telling me to use the grep-command, that is type in: grep
> "somename" *.c. For Windows users it's: findstr "somename" *.c.
The problem here is that t
On Saturday, June 11, 2011 04:26:44 AM Shuiwang Ji wrote:
> friends,
>
> I need some tool to visualize the results of hierarchical clustering.
> Specifically, I want to plot it as a radial plot as a phylogenetic tree. In
> addition, I want to specify the color to each leaf node. I search all
> phy
Thank you! Of course, I will read the posting guidelines. A subscriber helped
me via e-mail telling me to use the grep-command, that is type in: grep
"somename" *.c. For Windows users it's: findstr "somename" *.c.
--
View this message in context:
http://r.789695.n4.nabble.com/Inspecting-C-code-in
Good points, I was going to include something along the lines of don't change
any data in the console that is involved in the asynchronous process, but
figured Richard was smart enough to not do something like that. But your
points add to that and make it clear for others who read this that don
> Date: Sat, 11 Jun 2011 13:03:10 +0200
> From: lui.r.proj...@googlemail.com
> To: r-help@r-project.org
> Subject: [R] Amazon AWS, RGenoud, Parallel Computing
>
> Dear R group,
>
>
[...]
> I am a little bit puzzled now about what I could do... It seems
Presumably in the source code of the package (something.tar.gz). Follow the
posting guidelines if you want further assistance.
---
Jeff Newmiller The . . Go Live...
DCN: Basics: ##.#. ##.#. Live Go...
Live: OO#.. Dead:
Thank you Sarah for your quick answer! I've just downloaded the source
package, but now I don't know in which file the C-Code is stored
".C("somename",)" is calling - there is no file with the name
"somename". How could one figure that out?
--
View this message in context:
http://r.789695.n4.
The easiest thing to do is download the source package from your local
CRAN mirror. That will contain all the R and other code.
Sarah
On Sat, Jun 11, 2011 at 10:50 AM, Layman123 wrote:
> Hello everyone,
>
> Trying to comprehend code of an R package, I encountered the problem that
> the interesti
Hello everyone,
Trying to comprehend code of an R package, I encountered the problem that
the interesting part of the
function I'm inspecting is written in C-Code and called by ".C("somename",
)". Now I can't inspect the C-Code the function is calling since I can't
find it in the folder of the
friends,
I need some tool to visualize the results of hierarchical clustering.
Specifically, I want to plot it as a radial plot as a phylogenetic tree. In
addition, I want to specify the color to each leaf node. I search all
phylogenetic tree plotting routines here, they all cannot show the leaf
n
friends,
I need some tool to visualize the results of hierarchical clustering.
Specifically, I want to plot it as a radial plot as a phylogenetic tree. In
addition, I want to specify the color to each leaf node. I search all
phylogenetic tree plotting routines here, they all cannot show the leaf
n
I am applying a GLS model and would like to look at diagnostic plots of
influence.
The function (plot(model)) that works for linear models does not seem to
function for GLS models. Is there a reason for this? Or is different code
required?
Sorry if it's a very basic question, but thanks for you
Hello Abhisek,
maybe you wanna try it on just a bigger machine (I guess you are
working at a university, so I hope you do have access to them). In
case getting computing time or the like is a major issue, you may
wanna try Amazon AWS: For a few rupees (about 50-100 per hour) you can
"rent" pretty
Good morning gentlemen!
I'm not a fan of the lattice due to a large number of procedures what should
be done to reach a simple goal, but have confess that in some cases the
graphics are way better than the graphics. Some days I have been searching
without success as is to add a cut-off point on a
Dear R group,
since I do only have a moderately fast MacBook and I would like to get
my results faster than within 72h per run ( :-((( ), I tried Amazon
AWS, which offers pretty fast computers via remote access. I don't
want to post any code because its several hundreds lines of code, I am
not loo
The error message is literally true, as you did not specify any data to the
function at all. Please read the documentation. Also, note that
rcspline.plot is largely replaced by the R rms package, although it may have
value if there is only one predictor and that predictor is continuous. Also
not
> Date: Fri, 10 Jun 2011 16:50:24 -0300
> From: filipe.bote...@vpar.com.br
> To: frien...@yorku.ca; bkkoc...@gmail.com
> CC: r-help@r-project.org
> Subject: [R] RES: Linear multivariate regression with Robust error
>
>
>
> --Forwarded Message Attachmen
Dear all,
As I am new to the R community - although eager to advance- I would
like to pose a question to the community.
I have an SPSS file which I have imported it in R (with the read.spss
command) which conists of scale (continuous) variable "adiponectin" and
the corresponding categorical
your dataframe has X as a factor; convert to character vector and try again.
x$X <- as.character(x$X)
Sent from my iPad
On Jun 11, 2011, at 2:14, jour4life wrote:
> That's great! But, I guess I should have provided a better example for
> my problem. The reason being that I did not consider st
On 11/06/11 18:14, jour4life wrote:
That's great! But, I guess I should have provided a better example for
my problem. The reason being that I did not consider strings. For
instance, in my case, I'm actually trying to add a value to a data frame
that looks like this:
Obs X
0 NA
1 "01
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