Displaying 20 results from an estimated 500 matches similar to: "ROC curve using epicalc (after logistic regression)"
2009 Jul 27
0
ROC curve using epicalc (after logistic regression) (re-sent)
Dear R-help,
I am resending as I believe I screwed up the e-mail address to R-help
earlier. Sorry for my lack of attention to detail, and for any
inconvenience.
I have also sent the question to the package maintainer, as suggested
in the posting guide.
Regards,
Cliff
---------- Forwarded message ----------
From: Clifford Long <gnolffilc at gmail.com>
Date: Sun, Jul 26, 2009 at 8:46
2010 Nov 10
0
biglm and epicalc ROC curves
Hello list,
I am trying to avoid "Rifying" some of my SAS code to generate ROC
plots, and the logistic.display() and lroc() functions in the epicalc
package do what I want. However, I must generate my logistic model
with bigglm because I have 1) limited hardware, 2) ~2.5 million rows,
and 4 categorical and 2 continuous independent variables. When I
attempt to invoke epicalc's
2008 Nov 14
1
Epicalc package
Dear R-friends,
?
I am using the epicalc package and the manual by V. Chongsuvivatwong "Analysis of epidemiological
data using R and Epicalc" to get the hang of some basic epidemiological analyses.???
?
After running all the analyses of chapter 7, one is supposed to wrap it up by saving the data writing: ?
?
> save(.data, file = "Chapter7.Rdata")
?
...?after writing the
2008 May 05
1
proportional test on epicalc library vs. Jerrold H. Zar.
Hi everyone,
I'm working with the Epical library, specicatly using the power test in
proportions. I think this test is not working like in the book:
Biostatistical Analysis (4th Edition): Jerrold H. Zar
In the example 23.25. (I attach this Pic) It's not the same answer.
Using the follow command don't give the same answer.
library(epicalc)
power.for.2p(0.75, 0.50, 50, 45, alpha =
2008 Sep 08
2
ROC curve from logistic regression
I know how to compute the ROC curve and the empirical AUC from the logistic
regression after fitting the model.
But here is my question, how can I compute the standard error for the AUC
estimator resulting form logistic regression? The variance should be more
complicated than AUC based on known test results. Does anybody know a
reference on this problem?
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2008 Oct 31
4
how to compute a roc curve
Hi,
I'm trying to set up a prediction software, now i testing the performance
of my method, so i need to calculate a ROC curve, specially auc, cut-off,
sens and spec, i just looking at ROCH package, but it's a mass for me, i'm
not a math guy and I'm getting lost
Could any of you recommend me an easy-to-use package to do this task? i just
have a list of positive/negative samples
2011 Nov 02
1
Removing or ignoring package version for generic function in locked environment
Hi,
I use the epicalc package which provides the function aggregate.numeric.
Unfortunately aggregate.numeric produces warnings when aggregate is used by functions not under my control on a numeric value. If I don't load epicalc, aggregate.default is used instead by these functions and does not produce any warning.
However I need epicalc. So to get around this, what I would do is firstly
2009 Oct 10
0
installing any package fails using 'install.packages()' (PR#13996)
On 10 October 2009 at 05:25, lmramba at gmail.com wrote:
| Dear all,
| I installed my R-2.9.2 on my ubuntu version 9.04 successfully using=
the
| command
|=20
| sudo apt-get install r-base-dev
|=20
| The problem is that I cannot install any package.
Huh? This has _nothing_ to do with the error below.
=20
| See my details below:
|=20
|=20
|=20
| > install.packages("epicalc")
|
2014 Aug 21
2
pregunta
Buenas noches Javier y José,
Estoy en contra de usar attach(), asi que propongo la siguiente alternativa
con with():
# paquete
require(epicalc)
# los argumentos en ... pasan de epicalc:::cc
# ver ?cc para mas informacion
foo <- function(var1, var2, var3, ...){
or1 <- cc(var1, var2, ...)
or2 <- cc(var1, var3, ...)
list(or1 = or1, or2 = or2)
}
# datos
x <-
2008 Jul 22
3
Error in installing packages
Dear R Users;
I am an R user who has recently bought a new laptop;Toshiba Satellite
U405 running on both Windows Vista and Ubuntu.
I have problems on the wondows vista when installing packages. The
argument 'lib' is missing. How do i solve this problem?
Illustration:
> install.packages("epicalc")
Warning in install.packages("epicalc") :
argument 'lib'
2009 Oct 10
1
installing any package fails using 'install.packages()' (PR#13993)
Dear all,
I installed my R-2.9.2 on my ubuntu version 9.04 successfully using the
command
sudo apt-get install r-base-dev
The problem is that I cannot install any package.
See my details below:
> install.packages("epicalc")
Warning in install.packages("epicalc") :
argument 'lib' is missing: using
'/home/lmramba/R/i486-pc-linux-gnu-library/2.9'
2009 Jul 21
1
error when installing rjags
Hi All: I get the following error when trying to install the rjags package.
I've installed the
jags software and I'm using Fedora 10.0 and my sessionInfo is at the bottom
of this email.
I'm also sorry if this email ends up having control A's all over it. I still
haven't figured how to fix that. Thanks.
[1] "LOADING MASS LIBRARY"
checking for
2014 Aug 21
2
pregunta
Estimados
Estoy entrenando hacer funciones que respondan a comandos,
en esta caso en la salida gráfica se observa que dice : Exposure=var3 y
outcome=var 1
quisiéramos que se reflejan los nombres de la base de datos : var1=estado,
var2=cake, var3=chocolate
Espero haberme explicado adecuadamente
Adjunto tabla con datos
####################################
#Comando que llama
2008 Jul 25
0
Errror in running R2.7.1 version to R2.6.2 version
Dear all,
I get an error shown below when i run the command "use" found in
package epicalc on R2.7.1 and R2.7.0 but dont get the error when i run
it on R 2.6.2
What is likely to be the problem?
library(epicalc)
Loading required package: foreign
Loading required package: survival
Loading required package: splines
use("malvac.dta")
Error in fromchar(x) :
character string
2013 Sep 27
0
duda
Hola José A.
Entiendo que cargas lso datos del fichero con algo parecido a esto....
misdatos=read.table("sanda.csv",sep=",",header=TRUE)
luego, si no quieres referirte a las variables así misdatos$IMC tendrás que hacer un attach(misdatos) por lo que ya funcionarían cosas como summary(IMC) [en vez de sumemry(misdatos$IMC)
en tu caso...
require(epicalc)
2013 Oct 04
0
pregunta
José,
La función survfit espera como argumento una fórmula. Al pie del help de la
función survfit dice:
"Versiones anteriores del código también permiten la especificación de una
sola curva al omitir el lado derecho de la fórmula, es decir, ~ 1. El
manejo de este caso requiere algunas manipulaciones poco comunes y
frágiles, este caso ya no es compatible." (sepan disculpar la
2013 Oct 04
2
pregunta
En el libro EPICALC (pagina 229-230) en el que está el siguiente script,
todo nos funciona bien, pero cuando vamos a life table, ya allí no avanza,
lo señalamos en el script, por favor quizá se nos haya ido algún detalle,
pero fuimos siguiéndolo por el libro paso a paso y no no hemos percatado
Todos los de el paquete survival de la ayuda del R funcionan perfectamente
2007 Jul 26
5
ROC curve in R
Hi,
I need to build ROC curve in R, can you please provide data steps / code
or guide me through it.
Thanks and Regards
Rithesh M Mohan
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2013 Nov 17
0
FactoMineR
Hola,
El problema está con el nombre de las columnas y las filas del fichero que
importas.
Mira este detalle tras hacer la importación:
> names(mort)
[1] "X" "X15.24..79." "X25.34..79."
[4] "X35.44..79." "X45.54..79." "X55.64..79."
[7] "X65.74..79." "X75.84..79."
2002 Dec 04
0
Continuous X Display problems on AIX
Hello
Currently i'm using AIX 4.3.3. I've installed OpenSSH version 2.9p1 which by
the way works with the
way ive hacked it together to get X Displays working correctly.
I can ssh into the system as myself export my display back no problem.
I can ssh to a system as myself and ( su - userid ) and export my display
back but i had
to hack this together in order to get it to work.
I