[R] Define a glm object with user-defined coefficients (logistic regression, family="binomial")

2010-11-13 Thread Jürgen Biedermann
mmary functions). Thank you very much! Greetings Jürgen -- ------- Jürgen Biedermann Blücherstraße 56 10961 Berlin-Kreuzberg Mobil: +49 176 247 54 354 Home: +49 30 250 11 713 e-mail: juergen.biederm...@gmail.com __ R-help@r-proj

Re: [R] Define a glm object with user-defined coefficients (logistic regression, family="binomial")

2010-11-14 Thread Jürgen Biedermann
against a NULL model (named: ModelV0) of the second dataset with anova(ModelV, ModelV0, test="Chisq"). Best Wishes Jürgen -- ------- Jürgen Biedermann Blücherstraße 56 10961 Berlin-Kreuzberg Mobil: +49 176 247 54 354 Home: +49 30 250 11 713 e-mail: juergen.

[R] cross-validation complex model AUC Nagelkerke R squared code

2011-04-12 Thread Jürgen Biedermann
way I try to calculate a cross-validated AUC. Do I have an error in my thoughts of how to obtain easily cross-validated AUC and R Squared for a model developed to predict a binary outcome? I hope my problem is understandable and you could try to help me. Best regards, Jürgen -- --

[R] Increase the size of the boxes but not the text in a legend

2011-08-21 Thread Jürgen Biedermann
HI there, I want to add a legend to a plot using the density and angle argument, so patterns with lines in different angles are used in the plot and should be referred to. When I use default settings, the filled boxes are too small. With the cex argument I can enlarge the whole legend, but the

[R] How to specify "newdata" in a Cox-Modell with a time dependent interaction term?

2012-06-16 Thread Jürgen Biedermann
Companion/appendix-cox-regression.pdf Do you know any help? See code below Thanks very much in advance Jürgen Biedermann # #Code Rossi <- read.table("http://cran.r-project.org/doc/contrib/Fox-Companion/Rossi.txt";, header=T) Rossi.2

Re: [R] How to specify "newdata" in a Cox-Modell with a time dependent interaction term?

2012-06-16 Thread Jürgen Biedermann
is still no solution. Best regards Jürgen -- --- Jürgen Biedermann Bergmannstraße 3 10961 Berlin-Kreuzberg Mobil: +49 176 247 54 354 Home: +49 30 940 53 044 e-mail: juergen.biederm...@gmail.com - Korrespondenz -- Betreff: Re: How to specify

Re: [R] How to specify "newdata" in a Cox-Modell with a time dependent interaction term?

2012-06-17 Thread Jürgen Biedermann
, individual = TRUE) > > records n.max n.start events median 0.95LCL 0.95UCL >19809 432 432 114 NA NA NA > > plot(fit) # shows one survival curve > > See ?survfit.coxph. > > Best, > John > > > On Sat, 16 Jun 2012 16:23: