Displaying 20 results from an estimated 700 matches similar to: "possible improvement to ?with examples"
2003 Nov 20
1
glm inconsistent behaviour (PR#5213)
Full_Name: Finn Knudsen
Version: 1.8.0
OS: windows 2000
Submission from: (NULL) (194.192.22.33)
The problem seems to happen when running the GLM. When both multiplicative
effects and an offset is present. I experienced this problem on my own dataset
when using af Poisson familiy with log link function but the behaviour can be
reproduced with the following code.
I do not know if it is a bug, but
2004 Jul 05
2
Why does summary does not produce output?
Hello,
I'm a starting user of R. I have installed R 1.9.1 and winedt 5.4
If I run the example from written with winedt. The summary command does not
produce any output. It does when I repeat the command manualy in R. Can
someone explain me what can be the problem?
library(MASS)
data(anorexia)
anorex.1 <- glm(Postwt ~ Prewt + Treat + offset(Prewt),
family =
2005 Oct 29
2
LaTex error when creating DVI version when compiling package
Dear Listers,
I got this message when compiling a package:
* creating pgirmess-manual.tex ... OK
* checking pgirmess-manual.text ... ERROR
LaTex errors when creating DVI version.
This typically indicates Rd problems.
The message is quite explicit but I struggled a lot before understanding
that the trouble comes from a single file "selMod.rd" among 44 topics.
Even though I have
2012 Mar 04
1
p-value from GLM
Dear all,
I am fitting a GLM similar to
library(MASS)
anorex.1 <- glm(Treat~Postwt+Prewt,family = binomial, data = anorexia)
I have found two ways of computing the p-value of the fitted model:
pval1 <- 1-pchisq(anorex.1$deviance,anorex.1$df.residual)
pval2 <- 1-pchisq(anorex.1$null.deviance - anorex.1$deviance,
anorex.1$df.null - anorex.1$df.residual)
pval2 is
2018 Oct 17
2
methods(class = class(<obj>)) - improve for |cl.| > 1 ?
With new "strict" settings in R-devel, the following glm() example
> data(anorexia, package = "MASS")
> fm <- glm(Postwt ~ Prewt + Treat + offset(Prewt), family = gaussian, data = anorexia)
> methods(class = class(fm))
Warning in grep(name, row.names(info)) :
argument 'pattern' has length > 1 and only the first element will be used
Warning in
2008 Feb 06
2
GLM coefficients
Dear all,
After running a glm, I use the summary ( ) function to extract its
coefficients and related statistics for further use. Unfortunately, the
screen only displays a small (last) part of the results. I tried to
overcome the problem by creating/saving an object "coef" for
coefficients of the model and export/save it e.g. as a cvs document.
While I succed with this operatiion, I do
2008 May 05
3
troubles with R CMD check and examples under Ubuntu gutsy
Dear listers,
I was used to package pgirmess under Windows with everything OK, but,
for the first time, I had a trial this afternoon on Ubuntu 7.10 gutsy (I
have a double boot computer and work more and more under unix) and R
2.7.0. Everything went OK except this:
sudo R CMD check pgirmess
.....
* checking examples ... ERROR
Running examples in 'pgirmess-Ex.R' failed.
The error most
2018 Oct 19
0
methods(class = class(<obj>)) - improve for |cl.| > 1 ?
I think this would be a good change. I think most users use the
'methods(class = <...>)' function to answer the question, "what
methods can I call on objects with these classes?", and in that
context I think it would be sensible for the function to accept more
than one class.
Kevin
On Wed, Oct 17, 2018 at 7:15 AM Martin Maechler
<maechler at stat.math.ethz.ch>
2007 Nov 15
0
Package to make stepwise model selection using F or Chisq test
Hi,
I looking for a method that use F or Chisq test instead of AIC in a stepwise
modelo selection.
I try the grasp package using the grasp.step.anova, but It dont work.
> library(grasp)
Carregando pacotes exigidos: gam
Carregando pacotes exigidos: splines
Carregando pacotes exigidos: mda
Carregando pacotes exigidos: class
> data(anorexia,package="MASS")
>
> m1 <-
2003 Apr 24
2
R-1.7.0 build feedback: NetBSD 1.6 (PR#2837)
R-1.7.0 built on NetBSD 1.6, but the validation test suite failed:
Machinetype: Intel Pentium III (600 MHz); NetBSD 1.6 (GENERIC)
Remote gcc version: gcc (GCC) 3.2.2
Remote g++ version: g++ (GCC) 3.2.2
Configure environment: CC=gcc CXX=g++ LDFLAGS=-Wl,-rpath,/usr/local/lib
make[5]: Entering directory `/local/build/R-1.7.0/src/library'
>>> Building/Updating
2011 Jun 06
1
list demographics
Hi all,
I got curious about something, so in proper scientific fashion I
obtained some data and analyzed it.
Question: what is the female participation in the R-help email list?
Data: the most recent list postings, obtained from the website. I took
my best shot at classifying the names given in the email header as
male/female, but ended with a fair number of unknowns.
This dataset had 2797
2003 May 05
1
Error in library(MASS) : package/namespace load failed
Dear all,
I have installed 1.7.0 on my Win XP and want to use MASS. But I get this
error message:
> library(MASS)
Error in namespaceExport(ns, exports) : undefined exports: abbey,
accdeaths, Aids2, Animals, anorexia, austres, bacteria, beav1, beav2,
biopsy, birthwt, ...
Error in library(MASS) : package/namespace load failed
I therefore again downloaded VR.zip. When I extracted the files I
2001 Feb 06
3
RWin 1.2.1: Can't access sample datasets, e.g. MASS
I'm pretty sure I'll feel like [more of] an idiot but...
Using Rgui working in a fresh, blank directory.
> require(MASS)
Loading required package: MASS
[1] TRUE
> data(cabbages)
Warning message:
======> Data set `cabbages' not found in: data(cabbages) <=====
> ls()
[1] "last.warning"
> search()
[1] ".GlobalEnv" "package:MASS"
2009 Oct 06
3
Plot
Hi All,
Days <- matrix(c("Monday", "Tuesday", "Wed", "Thu", "Fri", "Sat",
"Sun"),7,1)
Hum <-matrix(c(56,57,60,75,62,67,70),
Temp<-matrix(c(76,77,81,95,82,77,83),
Using the above information I want plot humidity and temperature on Y-axis
and days on X-axis
Any help is appreciated!
[[alternative HTML version
2010 Jan 18
1
Exporting a data.frame to excel using sqlSave - adds a character ' to values
Hi all,
I am using RODB to export multiple data.frames into one excel file with
multiple sheets.
One thing I can't seem to unserdatand is way the command adds the character:
'
To the beginning of each of my (non numeric) values.
Here is an example code:
library(RODBC)
library(MASS)
data(anorexia)
save2excel <- function(x, t.name) sqlSave(xlsFile, x, tablename = t.name,
rownames =
2011 Jul 09
3
Confusing piece of R code
m0<-epxression((4*theta1*theta2-theta3^2)/(2*x*theta3^2)-0.5*theta1*x)
params<-all.vars(m0) this reads all the params
from m0 so theta1,2 and 3 correct?
params<-params[-which(params=="x")] checks which params are multiplied
by x?
np<-length(params)
for(i in 1:6){
esp<-get(sprintf("m%d",i-1))
2003 Apr 09
1
'Apparently' trouble with name spaces and Sweave...
Ben Bolstad experienced something odd while running R CMD check over
a package of ours using r-devel (yesterday's fresh).
He tracked down the problem to a vignette calling 'library(MASS)'.
Please kindly ignore if this is a known (and temporary) issue.
Laurent
----- Forwarded message from Ben Bolstad <bolstad@stat.berkeley.edu> -----
Return-Path:
2007 Nov 20
5
yuv - rgb conversion without contrast decrease.
Hello list,
When I convert an yuv pixel into rgb using the recipies in
http://www.fourcc.org/fccyvrgb.php I get an accurate color conversion
but the contrast seems to be decreased. If i write, e.g., the pixel
directly into an sdl yuv_overlay, I get a well-contrasted frame,
however, if I convert the pixel to rgb and call SDL_MapRGB, I get a
contrast-decreased frame.
Thanks,
Ribamar
2006 Feb 11
2
heatmap.2 in gplots (PR#8587)
Full_Name: Shane Neph
Version: 2.2.1
OS: mac os x
Submission from: (NULL) (71.113.43.247)
While I found the names of the package authors and maintainer, I was
unsuccessful in finding any contact information.
The preliminary documentation for heatmap.2 is inconsistent in at least a couple
of places when discussing the suppression of one or more dendrograms (and
column/row ordering in general).
2005 Jan 09
0
[LLVMdev] Version Control Upgrade?
Hi everyone,
Reid said:
> Of the tools available, it seems that only subversion, arch, and
> monotone are suitable for our purposes. But, we'd love to hear your
> thoughts; especially if you have first-hand experience with these tools.
Apart from using CVS as a client (as everyone does), I've only ever used
Aegis (previous employer, for ~3 years) and Perforce (the employer