search for: goralczyk

Hello Is there an easy way, i.e. a function in a package, to calculate the area under the curve (AUC) for drug serum levels? Thanks for any advice -- Armin Goralczyk, M.D. -- Universit?tsmedizin G?ttingen Abteilung Allgemein- und Viszeralchirurgie Rudolf-Koch-Str. 40 39099 G?ttingen -- Dept. of General Surgery University of G?ttingen G?ttingen, Germany -- http://www.chirurgie-goettingen.de

Hi list, I want to use the p-value from the survdiff function (package survival) to reuse within a function in a Kaplan-Meier plot. The p-value is somehow not a component of the value list ?! Thanks in advance -- A. Goralczyk G?ttingen, Ger.

...erpc-apple-darwin8.9.1 arch powerpc os darwin8.9.1 system powerpc, darwin8.9.1 status major 2 minor 5.1 year 2007 month 06 day 27 svn rev 42083 language R version.string R version 2.5.1 (2007-06-27) -- Armin Goralczyk, M.D. Dept. of General Surgery University of G?ttingen G?ttingen, Germany http://www.chirurgie-goettingen.de

...tion with the MacOS X binaries? Will it be resolved within the next days or should I rather install from source (in that case: is my assumption correct that it is possible or will it fail (I read the the check log and it seems that there is some error ?) Thank you for any advise or help -- Armin Goralczyk -- http://www.gwdg.de/~agoralc

...panel.grid(h = -1, v = -1, lwd = 1) panel.superpose(x, y, ...) }, type = c('b') ) plot(test.plot) (this plot doesn't look good, I know, it's just and example) Thank you -- Armin Goralczyk -- http://www.gwdg.de/~agoralc

...pter1.html (Fig. 1.8) But the code that is needed (to modify) is quite complex: http://www.stat.auckland.ac.nz/~paul/RGraphics/examples-table.R My question: Is there a simple way to obtain such a plot? and Is there any other good plot to visualize the hazard ratios? Thanks in advance. -- Armin Goralczyk

Hi list I tried to install package lattice on FreeBSD, but install.package() does not seem to find it in the repositories, even trying different mirrors. Could it be that lattice package is not available for FreeBSD? -- Armin Goralczyk, M.D. -- Universit?tsmedizin G?ttingen Abteilung Allgemein- und Viszeralchirurgie Rudolf-Koch-Str. 40 39099 G?ttingen -- Dept. of General Surgery University of G?ttingen G?ttingen, Germany -- http://www.gwdg.de/~agoralc

...e series by comparing the values at the single time points by a t-test. I know this is probably not the correct way to compare the whole series, but I have to do it this way ('constraints'). The question is: do I have to adjust for multiple testing by e.g. Bonferroni correction? -- Armin Goralczyk, M.D. -- Universit?tsmedizin G?ttingen Abteilung Allgemein- und Viszeralchirurgie Rudolf-Koch-Str. 40 39099 G?ttingen -- Dept. of General Surgery University of G?ttingen G?ttingen, Germany -- http://www.gwdg.de/~agoralc

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi, when trying to run some games I get this strange error about scsi-devices and the game doesn't recognize the game-CD: err:aspi:SCSI_GetDeviceName Could not open HKLM\HARDWARE\DEVICEMAP\Scsi\Scsi Port 1\Scsi Bus 0\Target Id 7\Logical Unit Id 0 I don't have any scsi-devices and I suppose it's a problem with my drives settings. Any

Hello all, There's a new mailing list for researchers in psychology who are learning and using R. New users of R are especially welcome. To join, venture to http://www.jiscmail.ac.uk/archives/psych-r.html and click "Join or leave the list (or change settings)" You can also peruse the archives from that page. Best wishes, Andy -- Andy Fugard, Postgraduate Research

...a slightly better fit. Can I do this? 7. Can I assume that the data is heteroskedastic? How do I apply the 'weights' in the above model? I am sorry if some questions may sound weird but I am just beginning to understand this (for me) rather complex concept. Thanks for any help. -- Armin Goralczyk, M.D. Dept. of General Surgery University of G?ttingen G?ttingen, Germany http://www.chirurgie-goettingen.de

Hello, Sorry for my english, in a R function, I want to read HTML files to analyse the text. Do somebody now, how can i read the text only in txt Foirmat... Thanks -- View this message in context: http://www.nabble.com/HTML-reading%2C-tf4447190.html#a12688719 Sent from the R help mailing list archive at Nabble.com.

There are now several R geographic user groups, and a few have mailing lists on the R mailing list system. Thanks to Martin M, there's also a pointer to a page I'm maintaining to list/describe the groups. The page is at http://macnash.telfer.uottawa.ca/RUG.html Contact me if you have a listing. I'm prepared to wikify it if there is sufficient interest. John Nash

Hi: Yesterday I downloaded R and got it up and running on my PC without a hitch, not so when I tried to do the same on my Mac powerbook, using Mac OSX: version 10.4.11.. I have virtually no experience, so I can't tell what exactly went wrong. At first it appeared that the software loaded correctly, it seemed like I was able to install R , and I even successfully unpacked the

...ng the mixed model with a fitted least-squares regression. I understand that this can be achieved with lmlist, but only for for models without an additional fixed effect!? Are there any other good approaches to validate a mixed-effects model that will be accepted in medical peer review? -- Armin Goralczyk, M.D. -- Universit?tsmedizin G?ttingen Abteilung Allgemein- und Viszeralchirurgie Rudolf-Koch-Str. 40 39099 G?ttingen -- Dept. of General Surgery University of G?ttingen G?ttingen, Germany -- http://www.gwdg.de/~agoralc

Hi, I'm trying to do a simple survival analysis on some data, and I'm having the following problem (here's my code and the error message): out <- Surv(fup,event=status) Error in Surv(fup, event = status) : argument "time2" is missing, with no default >From reading the documentation, it seems that I should be able to simply write: Surv(time1, event) if my data is

Fedora Linux 8 R 2.6.1 Intel CPU I am trying to get started with R under Linux. It has been suggested to me that I run R under EMACS. I have looked at the CRAN website, and several other places to try to find an RPM for EMACS and, if I need it for ESS. I have not succeeded in finding one. Can someone tell me where to go to get the RPMs? If anyone would have a suggestion for an editor other than

Dear WizaRds, This is mostly a statistics question, but I'm figuring that R is the right solution (even before I start!) I have some bio data of heart rate versus time (rats taken from resting to maximal heart rate). I want to regress heart rate on time. The data have been normalized such that resting heart rate is zero at time=0, so that all curves intersect at the origin (and at the origin