search for: christianlederer

...Definition you can get to from the same page. It seems like there must be an easier path to the information that I haven't thought of. Hope this helps, Matt Wiener -----Original Message----- From: r-help-bounces at stat.math.ethz.ch [mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of christianlederer at t-online.de Sent: Thursday, June 03, 2004 12:20 AM To: r-help at stat.math.ethz.ch Subject: [R] Sloppy argument checking for named arguments Dear R Gurus, i recently noticed that R does sloppy argument checking for named arguments, if the argument contains a dot. Example: > f <- func...

Hi, perhaps this is a stupid question, but i need some help about Helmert contrasts in the Cox model. I have a survival data frame with an unordered factor `group' with levels 0 ... 5. Calculating the Cox model with Helmert contrasts, i expected that the first coefficient would be the same as if i had used treatment contrasts, but this is not true. I this a error in reasoning, or is it

Full_Name: Christian Lederer Version: 1.8.0 OS: Linux Submission from: (NULL) (217.229.7.13) R-1.8.0 seems to calculate wrong covariances, when the argument of cov() is a matrix or a data frame. The following should produce a matrix of zeroes and NaNs: x <- matrix(c(NA ,NA ,0.9068995 ,NA ,-0.3116229, -0.06011117 ,0.7310134 ,NA ,1.738362 ,0.6276125, 0.6615581 ,NA

Hi, did anybody succeed in building R on SuSE Linux 9.1? My compilation failed with the following error messages: make[4]: Entering directory `/home/lederer/Source/R-1.9.0/src/modules/X11' gcc -I. -I../../../src/include -I../../../src/include -I/usr/X11R6/include -I/us r/local/include -DHAVE_CONFIG_H -D__NO_MATH_INLINES -mieee-fp -fPIC -g -O2 -c d ataentry.c -o dataentry.lo In file

Dear R-Gurus, is it possible, to define variables, which are only visible to functions belonging to a certain package? (For a certain package i would like to have something similar to static variables in C, which are only visible to functions defined in the same source file.) In the documentation (``Writing R Extensions") i found nothing appropriate. Christian :-)

Hi, when calculating the Cox model for a factor with n levels (using treatment contrasts), i noticed that the off diagonal elements of the estimated covariance matrix are always nearly (but not exactly) equal. On the one hand, this is plausible to me: If i could obtain estimates x_i, 1<=i<=n, for the log hazard ratios relative to the baseline hazard, then of course the off diagonal

Dear R-Users, after the last upgrade from r-base 2.11.1-2hardy0 to 2.11.1-5hardy0 i lost the tlctk package. I this a general problem under Ubuntu Hardy or should i search for a configuration error on my system? Christian