similar to: error with effects package.

I''ve setup two models, 1 and 2, that are associated by has_and_belongs_to_many. I''m trying to get an attribute from model_1 to use in a method in model_2. When I use the code below, I get an error saying ''undefined method model_1_id''. What am I missing? Thanks! Model_2.rb Class Model_2 < ActiveRecord::Base ... has_and_belongs_to_many :model_1 def

Dear R-helpers, I try to perform glm's with negative binomial distributed data. So I use the MASS library and the commands: model_1 = glm.nb(response ~ y1 + y2 + ...+ yi, data = data.frame) and predict(model_1, newdata = data.frame) So far, I think everything should be ok. But when I want to perform a glm with a subset of the data, I run into an error message as soon as I want to predict

Dear all, I am trying to evaluate the optimisation behaviour of a function. Originally I have optimised a model with real data and got a set of parameters. Now I am creating simulated data sets based on these estimates. With these simulations I am estimating the parameters again to see how variable the estimation is. To this end I have written a loop which should generate a new simulated data

Dear R-helpers, let us assume, that I have the following dataset: a <- rnbinom(200, 1, 0.5) b <- (1:200) c <- (30:229) d <- rep(c("q", "r", "s", "t"), rep(50,4)) data_frame <- data.frame(a,b,c,d) In a first step I run a glm.nb (full code is given at the end of this mail) and want to predict my response variable a. In a second step, I would

To whom it may concern: I have a question about how to appropriately conduct an lmer analysis for negative binomially distributed data. I am using R 2.2.1 on a windows machine. I am trying to conduct an analysis using lmer (for non-normally distributed data and both random and fixed effects) for negative binomially distributed data. To do this, I have been using maximum likelihood,

Hi R users, The nlme library enabled several alternate error structures useful for longitudinal or repeated-measures data. For example, a continuous AR(1) process: model_2 = update(model_1, correlation = corCAR1(form = ~ time | subject)) Does anybody know if this is available in lme4? Thank you Ben -- View this message in context:

Ok, This sounds like it should be easy but I am having a hard time with it. I am making a website but I''m trying to make everything in it fairly database driven, this is really pretty much my first rails project. I have a table called ''nav_items'' to display the nav choices, but there is also other dynamic data on the homepage such as the ''events''

Een ingesloten tekst met niet-gespecificeerde tekenset is van het bericht gescrubt ... Naam: niet beschikbaar Url: https://stat.ethz.ch/pipermail/r-help/attachments/20070820/920567a6/attachment.pl

Hi, I am currently trying to switch from Splus to R and I would like to know whether there is a way of transfering Splus objects stored on disk into the R environment. In Splus I would do this using the function get, e.g., foo <- get(foo,where="dirname") where dirname is the name of a directory containing the Splus objects. In R, argument 'where' of function get appears to

Hi everybody hacking in the 200-pre4 i found everything i needed, so i gave it a try ... and it works! But dont blame for the code, its just quick and dirty! --- ../syslinux-2.00-pre4/pxelinux.asm Sat Jun 15 07:25:51 2002 +++ ./pxelinux.asm Wed Aug 14 10:05:00 2002 @@ -17,6 +17,11 @@ ; version; incorporated herein by reference. ; ;

Hello We use CentOS 4.4 but we have some problems to copy test from Emacs to a gnome-terminal. It does not work !! It's ok from Xemacs. emacs-common-21.3-19.EL.4 xemacs-common-21.4.15-10.EL.1 Any idea ? cc ************************************************************************** Christophe Caron - INRA | T?l: (+33) 013465 2888 Mathematique, Informatique et Genome| Fax: (+33)

Hi, I have a mac OS X 10.4.11. Since I have updated R (version 2.6.2) I have a bug with the console:=20=20 when R is busy and I want to stop the computation, I click on "STOP"=20=20 and then R does not respond anymore (I have to kill it). I had no=20=20 problem with my previous version. For information, I have downloaded R-2.6.2-mini.dmg regards, Christophe. --- Ma=EEtre de

What is the best way to back up a zfs pool for recovery? Recover entire pool or files from a pool... Would you use snapshots and clones? I would like to move the "backup" to a different disk and not use tapes. suggestions?? TIA --Kenny -- This message posted from opensolaris.org

hi there, trying to follow the steps of Yan & Rossini 2003, I have two problems : first when I 'make CrossCompileBuild', I get : ****************************************************************************** make[1]: Entering directory `/home/ros/RWORK/CROSSSOMP/WinR/R-1.8.0/src/gnuwin32' make -f Makefile.docfiles make[2]: Entering directory

Hello Peter Anvin Verry good job your PXELINUX. I toke your PXELINUX and made the changes posted from Hans-Werner Jouy. http://www.zytor.com/pipermail/syslinux/2002-August/000757.html It's really great! Thanks Roberto Rotondo from Switzerland

Hi Jerry! Please excuse me, I had problems for few months at work and I don't reply to you. I didn't solve "remote downlevel document" problem. I'm using samba 3.0.14a (debian sarge package). Can you help me? Thanks, Fabio -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 fabio.marcone at duet.it wrote: > Hi! > > I'm testing a printer server samba+cups. I set

I''m running Instant Rails 1.4 on Windows XP with SP2. I have downloaded the Windows binary version of RMagick from the RubyForge page. Specifically, I have downloaded: 1.14.1 binary gem for Ruby 1.8.5 (fixed for RubyGems 0.9.4) RMagick-1.14.1_IM-6.3.0-7-Q8-2.zip I have removed any older versions of RMagick using: gem uninstall RMagick I have updated my version of rubygems. I

I know i''m probably doing something REALLY stupid.....but for some reason i can''t get send/recv to work over ssh. I just built a new media server and i''d like to move a few filesystem from my old server to my new server but for some reason i keep getting strange errors... At first i''d see something like this: pfexec: can''t get real path of

I have a 5-500GB disk Raid-Z pool that has been producing checksum errors right after upgrading SXCE to build 121. They seem to be randomly occurring on all 5 disks, so it doesn''t look like a disk failure situation. Repeatingly running a scrub on the pools randomly repairs between 20 and a few hundred checksum errors. Since I hadn''t physically touched the machine, it seems a

R users, In S, there was a function called usa() that would draw the map of the United States, plus it had other options for graphics. I have looked but I can't find the equivalent in R. Is there one? Thanks, Jason