Displaying 20 results from an estimated 1000 matches similar to: "median of a survfit object"
2005 Dec 27
2
Create pdf and postscript files
Hello,
I would like to learn how to create a pdf and a postscript file from an R
graphic.
For example, I tried :
plot(1) # example
pdf("H:/Perso/essai.pdf")
postscript("H:/Perso/essai.ps")
But the pdf document created is empty.
How do these functions work ?
Thank you very much.
--
David Hajage
Interne de santé publique
Institut Curie
2011 Mar 18
1
median survival time from survfit
Hello,
I am trying to compute the mdeian of the survival time from the function
survfit:
> fit <- survfit(Surv(time, status) ~ 1)
> fit
Call: survfit(formula = Surv(time, status) ~ 1)
records n.max n.start events median 0.95LCL 0.95UCL
111 111 111 20 NA NA NA
The results is NA? the fit$surv gives values between 1 and 0.749! Am I doing
this correct?
2006 May 05
2
How to access results of survival analysis
Hi List,
A friend of mine recently asked the same question as Heinz T?chler. Since
I've already written the code I'd like to share with the list.
# x is an object returned by "survfit";
# "smed" returns a matrix of 5 columns of
# n, events, median, 0.95LCL, 0.95UCL.
# The matrix returned has rownames as the
# group labels (eg., treatment arms) if any.
smed <-
2009 Sep 08
1
Obtaining value of median survival for survfit function to use in calculation
Hi,
I'm sure this should be simple but I can't figure it out! I want to get the median survival calculated by the survfit function and use the value rather than just be able to print it. Something like this:
library(survival)
data(lung)
lung.byPS = survfit(Surv (time, status) ~ ph.ecog, data=lung)
# lung.byPS
Call: survfit(formula = Surv(time, status) ~ ph.ecog, data = lung)
1
2006 Oct 25
1
Incorrect 'n' returned by survfit()
I've a data set with 60000 rows of data representing 6000+ distinct loans. I did a coxph() regression on it (see call below), but a subsequent survfit() call on the coxph object is almost certainly wrong. It gives n=6 when it should be
more like 6000+ (I think)
> survfit(resultag)
Call: survfit.coxph(object = resultag)
n events median 0.95LCL 0.95UCL
6 489 Inf
2009 Jan 09
5
grep : escape "*"
Dear R useRs,
Sorry for this foolish question, but I can't find how to escape the *
character when using grep :
> grep("-", c("/3", "2*3", "4-4"))
[1] 3
> grep("/", c("/3", "2*3", "4-4"))
[1] 1
> grep("*", c("/3", "2*3", "4-4"))
Erreur dans grep("*",
2013 Apr 15
2
Convert results from print(survfit(formula, ...)) into a matrix or data frame
Hello All,
Below is some sample survival analysis code. I'd like to able to get the results from print(gehan.surv) into a matrix or data frame, so I can manipulate them and then create a table using odfWeave. Trouble is, I'm not quite sure how make such a conversion using the results from a print method.
Is there some simple way of doing this?
Thanks,
Paul
require(survival)
2006 Nov 11
1
Install bioconductor
Hello useRs,
I'm trying to install bioconductor on ubuntu edgy eft and R 2.4.0.
I have some error messages during installation, in particular for the
package "affy" :
"Error: package 'affy' required by 'makecdfenv' could not be found"
I have tryed to install 'makecdfenv' with the command :
getBioC("makecdfenv")
But I have this message
2006 Oct 13
3
Barplot legend position
Dear useRs,
I'm trying to create a barplot like so:
x=matrix(1:10,2,5)
barplot(x,leg=c("left","right"),besid=T)
The legend is placed in default position topright, however the data are
plotted there too. I tried controlling the legend position by adding
x="topleft" but this results in an error that x matches multiple formal
arguments.
Leaving out the legend
2009 Jan 30
2
error message with roxygen
Hello useRs,
I'm trying to use the Roxygen package.
Here my code file :
#' A packge to check Roxygen's sanity
#' @name helloRoxygen-package
#' @docType package
NA
And my R code to generate the package :
library(roxygen)
package.skeleton("helloRoxygen", code_files = "roxy.r", force = T)
roxygenize("helloRoxygen", "helloRoxygen",
2010 Jun 21
1
survfit function - event information???
Hi all!
I am trying to extract output information from the survfit function in order
to generate a matrix of select output for multiple factors.
Specifically, I am interested in extracting the number of events (in the
output below: 106, 2, 3). The variable names represented in my function
(ee) are shown below, but none of those variables correspond to the column
of events as shown in the output.
2013 Mar 04
2
survfit plot question
Hello,
I create a plot from a coxph object called fit.ads4:
plot(survfit(fit.ads4))
plot is located at:
https://www.dropbox.com/s/9jswrzid7mp1u62/survfit%20plot.png
I also create the following survfit statistics:
> print(survfit(fit.ads4),print.rmean=T)
Call: survfit(formula = fit.ads4)
records n.max n.start events *rmean *se(rmean)
median 0.95LCL 0.95UCL
203.0
2013 Nov 19
1
Does function read.sas7bdat() have some memory limitations?
Dear R-ers,
I was trying to read in a large sas7bdat file (size 148094976 bytes) using 'read.sas7bdat()', but it did not read in the data correctly. E.g., the first 5 rows will come out like this (I'm omitting other columns to keep it readable):
PERSON_ID age
1 5.399114e-315 5.329436e-315
2 5.399114e-315 5.328302e-315
3 5.399114e-315 5.332026e-315
4
2006 Jun 15
2
Name of a column
Un texte encapsul? et encod? dans un jeu de caract?res inconnu a ?t? nettoy?...
Nom : non disponible
Url : https://stat.ethz.ch/pipermail/r-help/attachments/20060615/8bdef5dc/attachment.pl
2006 Jul 17
6
Output and Word
Hi
I have just started to have a look at R. I have used most stats software
packages and can use perl, visual basic etc. I am interested in how well
it handles lots of output e.g. tables or charts. How would you get lots
of output most easily and quickly into a Word document?
Sharon Snowdon
------------------------------------------------------------------------
-
FIGHT BACK AGAINST SPAM!
2007 Jul 17
4
[R-sig-DB] RODBC on Oracle DB
essai <- odbcConnect("ORESTE_prod", uid="osis_r", pwd="12miss15" ,case="oracle")
> sqlTables(essai)$ORESTE
...
1315 <NA> ORESTE S_PROFESSIONS_OLD TABLE <NA>
1316 <NA> ORESTE S_PROVENANCES TABLE <NA>
1317 <NA> ORESTE
2012 Nov 16
2
How to create as.numeric.xxx
I would like to create a function to convert data based on a class using
as.numeric
Similarly, using a plot, I do:
plot.essai <- function(x, ...) {return(x*2)}
d <- 10
class(d) <- "essai"
plot(d)
It works:
[1] 20
attr(,"class")
[1] "essai"
Now same with as.numeric:
as.numeric.essai <- function(x, ...) {return(x*2)}
as.numeric(d)
It does not work:
2012 Aug 08
2
Exec resource don't write file after the command
Hi all,
I''m trying to have the exec resource write a file after the command but it
don''t.
here is the resource declaration
class gepet {
notify { ''begin'':}
file { ''/root/essai/html'':
ensure => present,
content => "Wrote By Yves Nton",
notify => Exec[''test''],
}
exec { ''test'':
path
2004 Mar 31
3
scan seems to modify the data
Hello list,
I have used scan function to import data into R. I have done some analysis
and find strange results. I have found my problem : when importing data
with scan, this can slightly modify the data :
> write(c(0.251,3.399,-0.481,0.266),"essai.txt")
> scan("essai.txt")
Read 4 items
[1] 0.251 3.399 -0.481 0.266
> print(scan("essai.txt"),17)
Read
2007 Jul 20
8
Wx::StaticText
Salut alex.
J''ai une question a propos de wx::statictext(wxruby2)
est-il possible de mettre les accents pour la langue française?, car pour l''instant je ne peut pas mettre l''accentuation alors que ça marche bien avec "wxruby".
merci
Sebastien
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