Displaying 20 results from an estimated 2000 matches similar to: "Extract BIC for coxph"
2013 Feb 21
4
Getting htmlParse to work with Hebrew? (on windows)
Hello dear R-help mailing list.
Looks like the same issue in Russian:
library(RCurl)
library(XML)
u = " http://www.cian.ru/cat.php?deal_type=2&obl_id=1&room1=1"
a = getURL(u)
a # Here - the Russian is fine.
a2 <- htmlParse(a)
a2 # Here it is a mess...
None of these seem to fix it:
htmlParse(a, encoding = "windows-1251")
htmlParse(a, encoding =
2015 Jun 16
4
Bugzilla activity?
Hi!
I was wondering whether anybody was looking at the bugs on Bugzilla. I'm
asking because I've seen bugs tackled on the mailing list quite quickly,
but two fully reproducible reports I've filed on Bugzilla haven't
triggered any reaction in several weeks (for the older one).
FWIW, these are:
- Line goes beyond plot region
2013 May 21
1
Lattice, ggplot, and pointsize
Hi!
When inserting R plots into a document using odfWeave, I fought for a
while to get Lattice plots use the same text size as base plots. I
eventually discovered that specifying a point size via e.g.
svg(pointsize=10) has no effect on Lattice plots. One needs to adjust
the size manually via:
trellis.par.set(fontsize=list(text=10, points=8))
This is also developed for both Lattice and ggplot2 by
2012 Sep 10
1
E-mail # 2 / attachments matrix test cases
HI Sridhar,
Try this:
#I saved the file as .csv.
?testMaster<-read.csv("test1Master.csv")
?test2Sorted<-read.csv("test2Sorted.csv")
testMaster1<-testMaster[order(testMaster[,1]),]
test2Sorted1<-test2Sorted[order(test2Sorted[,1]),]
Combinedat<-as.matrix(merge(testMaster1,test2Sorted1,by="X"))
?rownames(Combinedat)<-Combinedat[,1]
2017 Jan 19
2
xtabs(), factors and NAs
Hi all,
I know this issue has been discussed a few times in the past already,
but Martin Maechler suggested in a bug report [1] that I raise it here.
Basically, there is no (easy) way of printing NAs for all variables
when calling xtabs() on factors. Passing 'exclude=NULL,
na.action=na.pass' works for character vectors, but not for factors.
> test <-
2012 Jan 13
3
tm package, custom reader
I need help with creating custom xml reader for use with the tm package. The
objective is to crate a corpus for analysis. Files that I'm working with
come from solr and are in a funky XML format never the less I'm able to
parse the XML files using solrDocs.R function provided by Duncan Temple
Lang.
The problem I'm having that once I parse the document I need to create a
custom
2013 Apr 11
3
odfWeave: Some questions about potential formatting options
Hello All,
Learning to use the odfWeave package. I really like the package. It has good documentation, makes some very nice looking tables, and seems to have lots of options for customizing output.
There are a few things I'd like to do that don't seem to be covered in the documentation though. So I'm not sure if they're possible or not.
Here's a list of some things I'd
2013 Sep 30
4
read.table() with quoted integers
Hi!
It seems that read.table() in R 3.0.1 (Linux 64-bit) does not consider
quoted integers as an acceptable value for columns for which
colClasses="integer". But when colClasses is omitted, these columns are
read as integer anyway.
For example, let's consider a file named file.dat, containing:
"1"
"2"
> read.table("file.dat",
2011 Apr 12
2
Testing equality of coefficients in coxph model
Dear all,
I'm running a coxph model of the form:
coxph(Surv(Start, End, Death.ID) ~ x1 + x2 + a1 + a2 + a3)
Within this model, I would like to compare the influence of x1 and x2 on the
hazard rate.
Specifically I am interested in testing whether the estimated coefficient
for x1 is equal (or not) to the estimated coefficient for x2.
I was thinking of using a Chow-test for this but the Chow
2010 Dec 26
1
Calculation of BIC done by leaps-package
Hi Folks,
I've got a question concerning the calculation of the Schwarz-Criterion
(BIC) done by summary.regsubsets() of the leaps-package:
Using regsubsets() to perform subset-selection I receive an regsubsets
object that can be summarized by summary.regsubsets(). After this
operation the resulting summary contains a vector of BIC-values
representing models of size i=1,...,K.
My problem
2010 Nov 11
2
predict.coxph and predict.survreg
Dear all,
I'm struggling with predicting "expected time until death" for a coxph and
survreg model.
I have two datasets. Dataset 1 includes a certain number of people for which
I know a vector of covariates (age, gender, etc.) and their event times
(i.e., I know whether they have died and when if death occurred prior to the
end of the observation period). Dataset 2 includes another
2014 Dec 15
3
Making iconv portable?
Hello, All:
What would it take to make ?iconv? portable?
I ask, because I want to convert accented characters to vanilla ASCII, thereby converting, e.g., ?Ra?l? to ?Raul?, and Milan Bouchet-Valet suggested on R-help that I use 'iconv(x, ?", "ASCII//TRANSLIT?)?. This worked under Windows but failed on Linux and Mac. It?s part of the ?subNonStandardCharacters? function
2013 Apr 20
1
Assigning factor to character vector
Hi!
Yesterday I accidentally discovered this:
> a <- LETTERS[1:5]
> a
[1] "A" "B" "C" "D" "E"
>
> a[1] <- factor(a[1])
> a
[1] "1" "B" "C" "D" "E"
BUT:
> b <- factor(LETTERS[1:5])
> b
[1] A B C D E
Levels: A B C D E
> b[1] <- factor(b[1])
> b
[1] A B C D E
2011 Nov 16
1
"Non-finite finite-difference value" error in eha's aftreg
Hi list!
I'm getting an error message when trying to fit an accelerated failure
time parametric model using the aftreg() function from package eha:
> Error in optim(beta, Fmin, method = "BFGS", control = list(trace =
> as.integer(printlevel)), :
> non-finite finite-difference value [2]
This only happens when adding four specific covariates at the same time
in the
2004 Mar 05
1
Application of step to coxph using method="exact" (PR#6646)
Full_Name: John E. Kolassa
Version: Version 1.8.1
OS: Solaris
Submission from: (NULL) (128.6.76.36)
Stepwise model selection for coxph appears to fail with method="exact".
The code
step(coxph(Surv(1:100,rep(1,100))~factor(rep(1:4,25)),method="exact"))
produces the error message
Start: AIC= 733.07
Surv(1:100, rep(1, 100)) ~ factor(rep(1:4, 25))
Error in
2012 Oct 25
2
Regarding the memory allocation problem
Dear All,
My main objective was to compute the distance of 100000 vectors from a
set having 900 other vectors. I've a file named "seq_vec" containing
100000 records and 256 columns.
While computing, the memory was not sufficient and resulted in error
"cannot allocate vector of size 152.1Mb"
So I've approached the problem in the following:
Rather than reading the data
2013 May 26
1
load ff object in a different computer
Hi all,
I am having trouble loading a ff object previously saved in a different
computer. I have both files .ffData and .RData, and the first of them is
13Mb large from which I know the data is therein. But when I try to ffload
it,
checkdir error: cannot create /home/_myUser_
Permission denied
unable to process
home/_myUser_/Rtempdir/ff1a831d500b8d.ff.
and
2012 Oct 27
1
contr.sum() and contrast names
Hi!
I would like to suggest to make it possible, in one way or another, to
get meaningful contrast names when using contr.sum(). Currently, when
using contr.treatment(), one gets factor levels as contrast names; but
when using contr.sum(), contrasts are merely numbered, which is not
practical and can lead to mistakes (see code at the end of this
message).
This issue was discussed quickly in 2005
2012 Feb 10
1
Out of date instructions to build R using MKL
Hi!
I've been playing with MKL for a few days and I noticed the instructions
in the R Installation Administration manual [1] no longer apply. It
seems that since version 10.0 (the one used by the manual),
libmkl_lapack.so has been renamed/split (although the official
explanations seem to imply this was already the case in 10.0 [2]).
As a consequence, the instructions for dynamic linking no
2005 Jan 26
2
Source code for "extractAIC"?
Dear R users:
I am looking for the source code for the R function extractAIC. Type the
function name doesn't help:
> extractAIC
function (fit, scale, k = 2, ...)
UseMethod("extractAIC")
<environment: namespace:stats>
And when I search it in the R source code, the best I can find is in (R
source root)/library/stats/R/add.R:
extractAIC <- function(fit, scale, k = 2,