Displaying 20 results from an estimated 4000 matches similar to: "Documentation Bugs (PR#1618)"
2000 Dec 05
1
Inconsistency, possibly a bug? (PR#758)
Seems to be a day for finding peculiar little things. There is an
inconsistency in the behavior of lm vis a vis glm:
> x <- rnorm(15)
> y <- 1 + 10*x + rnorm(15)
> z <- as.factor(rep(c("A","B","C"),rep(5,3)))
> xyz <- data.frame(x,y,z)
> fit.lm <- lm(y ~ x + z, data=xyz, subset=(z != "C"))
> fit.glm <- glm(y ~ x +
2011 Mar 16
1
Standardized Pearson residuals (and score tests)
Hi Peter and others,
If it helps, I wrote a small function glm.scoretest() for the statmod
package on CRAN to compute score tests from glm fits. The score test for
adding a covariate, or any set of covariates, can be extracted very neatly
from the standard glm output, although you probably already know that.
Regards
Gordon
---------------------------------------------
Professor Gordon K
2011 Apr 15
1
Sweave and Slides (Beamer)
I'm posting this for two reasons: one is to see if anyone has a better
way of solving the problem or suggestions for improving my existing
approach; and the other is to show what I'm currently doing in case
anyone else might find it useful.
The background is that I've been using Sweave for several years now to
produce class notes, and I sometimes include quite a lot of raw R input
and
2000 Mar 02
1
R Package Building Question
I'll start with my apologies to Martin for sending those last two of
message to the list owner (the last one he forwarded was actually sent
a week or two ago and must have been lost in the ether somehow). This
is basically due to fast copy/paste in emacs without paying much
attention to what I'm doing. Lack of sleep is my excuse, but I don't
know if that goes very far with the
2007 Mar 06
1
Stangle and annotate
How exactly should I go about turning off annotation when running
Stangle (Rtangle) with "R CMD Stangle myfile.Rnw"?
Ideally I would like to be able to turn annotation off and on for
individual code chunks, or maybe better, to annotate only named
chunks. Are either of these things easily done?
Is there some way to figure out this sort of thing without reading
through the source code
2002 Jan 11
2
new dgamma rate argument
Can someone explain to me in what way the new (dpqr)gamma parameter
can be interpreted as a rate (when shape != 1)? The only gamma rate
that I am aware of is the hazard rate given by dgamma/(1-pgamma), the
log of which is returned by my hgamma function (event library).
Jim
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list -- Read
2001 Oct 11
3
Underscores and Fortran code
This might more properly be filed as a bug report, but ...
I came upon the following problem while trying to dyn.load a library
of Fortran code into R. I'm running RedHat 7.1 on a Pentium III
laptop, with R version 1.3.1 (latest rpm from CRAN) and gcc/g77
version 2.96.
My library has a number of Fortran subroutines that have underscores
in their names for readability. By default g77
2000 Mar 01
1
Contingency tables as data frames
{again a message that was sent to owner-r-help (which is me, currently)
why on earth ???!??!?
reply to R-help or the original sender Brett Presnell; }
I'm teaching a categorical data analysis course this term, and a minor
"problem" has resurfaced that I have often thought about before. This
applies equally to Splus I suppose, but my undergrads aren't using
Splus.
It
2011 Mar 14
3
Standardized Pearson residuals
Is there any reason that rstandard.glm doesn't have a "pearson" option?
And if not, can it be added?
Background: I'm currently teaching an undergrad/grad-service course from
Agresti's "Introduction to Categorical Data Analysis (2nd edn)" and
deviance residuals are not used in the text. For now I'll just provide
the students with a simple function to use, but I
2000 Dec 04
1
Bug in plot.formula (PR#757)
Here's a simple example:
> x <- rnorm(20)
> y <- 1 + 10*x + rnorm(20)
> plot(y ~ x, subset=2*(1:10),xlab="In",ylab="Out")
Error in length(x) == l : comparison (1) is possible only for vector types
The problem seems to be in this section of the code for plot.formula:
if (!missing(subset)) {
s <- eval(m$subset, data, parent.frame())
l
2002 Apr 22
3
glm() function not finding the maximum
Hello,
I have found a problem with using the glm function with a gamma
family.
I have a vector of data, assumed to be generated by a gamma distribution.
The parameters of this gamma distribution are estimated in two ways (i)
using the glm() function, (ii) "by hand", using the optim() function.
I find that the -2*likelihood at the maximum found by (i) is substantially
larger than that
2012 Apr 06
2
Changing grid defaults
I'm trying to use the vcd package to produce mosaic plots for my class
notes, written in Sweave and using the LaTeX's beamer document class.
For projecting the notes in class, I use a dark background with light
foreground colors. It's easy enough to change the defaults for R's
standard graphics to match my color scheme (using the fg, col.axis,
col.lab, col.main, and col.sub
2003 Jan 21
2
books on categorical data analyses
Dear All,
We are about to purchase the second edition of Agresti's "Categorical Data
Analysis" (my old copy of the first ed. of that wonderful book is falling
apart). I would appreciate suggestions about other comparable books which, if
possible, have examples using R/S code (instead of SAS).
Thanks,
Ram?n
--
Ram?n D?az-Uriarte
Bioinformatics Unit
Centro Nacional de
2012 Jan 26
1
ftable.formula
I apologize in advance if this is the wrong forum for this
report/request, and for the fact that I have not read the code for
ftable.formula in any detail.
>From reading the documentation for ftable.formula, I expected that the
following two calls to ftable would produce the same results:
data(UCBAdmissions)
ftable(UCBAdmissions, row.vars = "Dept", col.vars = c("Gender",
2000 Feb 29
0
Feature request for read.table
{why do I get more and more messages sent to "owner-r-devel" or
"owner-r-help" ??
"owner-foo" by convention (even RFC ???) is the (set of) maintainer(s)
of mailing list "foo"..
Please *do* post to "R-help" , "R-devel", and *NOT* to "owner-...." !
Martin Maechler = current owner-r-...
------- start of forwarded
2005 Jun 10
1
logistic regressioin - course ornotes
Hi
I am using R for logistic regression and finding it very useful.
However, I wondered if anyone could point me to any course or notes on
this subject using R.
All help most welcome.
Stephen
--
Internal Virus Database is out-of-date.
Checked by AVG Anti-Virus.
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2011 May 11
2
New code in R-devel: Rao score test for glm.
I have just committed some code to the r-devel branch to implement the Rao efficient score test. This is asymptotically equivalent to the LRT, but there is some indication that it might have better properties in smaller samples since it is based more directly on the distribution of the sufficient sums under the null hypothesis (e.g., if you have a divergent fit to the model under the alternative,
2002 Mar 29
1
glm start/offset bugs (PR#1422)
--fupGvOGOQM
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There's a simple bug in the handling of the start and offset arguments
in glm and glm.fit. The bug exists in the latest development version
of R (version information below), but it appears that glm.R has not
been touched much lately, so the bug affects at
2010 May 17
0
R interface for blind users: Summary
Dear R-help,
just for the record a summary of responses to my problem:
> On 04/05/2010 9:41 AM, Rainer Scheuchenpflug wrote:
> a student of mine tries to use the Windows-Rconsole with screen
> reading software (she is blind), and cannot access the command line (Menus
are ok).
- Duncan Murdoch (Murdoch.duncan at gmail.com) suggested as preliminary
workaround to run RTerm in a command
2002 Jul 02
1
subscript out of bounds
Hello
As I'm beginning to write functions, I decided to have my personnal R library
named MyStuff located in /home/fred/R.Lib/MyStuff/
The library file itself is at /home/fred/R.Lib/MyStuff/R/MyStuff
evrything seems ok since
> library()
gives :
Packages in library `/usr/lib/R/library':
KernSmooth Functions for kernel smoothing for Wand &