similar to: anova leads to an error

Hi, I wish to compute multivariate test statistics for a within-subjects repeated measures design with anova.mlm. This works great if I only have two factors, but I don't know how to compute interactions with more than two factors. I suspect, I have to create a new "grouping" factor and then test with this factor to get these interactions (as it is hinted in R News 2007/2), but

Hi, I'm encountering a very odd problem with calls to anova.mlm() from within a function. Consider the following code (data.n is a matrix of numeric values): mlmfit <- lm(data.n ~ 1) mlmfit0 <- lm(data.n ~ 0) print(mlmfit) anova(mlmfit,mlmfit0,test="Spherical") If I run it just like this from the console, it works just fine. If, however, I call it from within a function,

Dear R Masters, I'm an anesthesiology resident trying to make his way through basic statistics. Recently I have been confronted with longitudinal data in a treatment vs. control analysis. My dataframe is in the form of: subj | group | baseline | time | outcome (long) or subj | group | baseline | time1 |...| time6 | (wide) The measured variable is a continuous one. The null hypothesis in

Dear R folk, First off I want to thank those of you who responded with comments for my R quick and dirty stats tutorial. They've been quite helpful, and I'm in the process of revising them. When it comes to repeated measures MANOVA, I'm in a bit of a bind, however. I'm beginning to see that all of the documentation is written for psychologists, who have a slightly

Hi everyone, I'm testing with a Samba4 AD network, and I have some problems with DNS on the second DC, with which I could use a bit of your help. I have an AD with two DC's, both Samba 4.2.3. On the first DC, samba_dnsupdate works fine. With stock 4.2.3 I get the error "TSIG error with server: tsig verify failure" but the DNS updates succeed anyway, and after applying

L.P.H. van Belle writes: > check the rights on : > /var/lib/samba/private/dns.keytab 640 root:bind > /var/lib/samba/private/dns 750 root:bind > /var/lib/samba/private/sam.ldb.d 750 root:bind I'm using the internal DNS on both DC's, so I guess bind access rights aren't the issue. Thanks for your answer though :) Regards, Roel > >-----Oorspronkelijk

L.P.H. van Belle writes: > is the time in sync on your servers ? Yes it is. I managed to make it work by specifying the primary DC as nameserver in /etc/resolv.conf of the secondary DC. As soon as I do that, samba_dnsupdate works on the secondary. When I change it back to use the local Samba as resolver, it no longer works. So it is a DNS issue (possibly related to replication

Dear All, I'm trying to model heteroscedasticity using a multilevel model. To do so, I make use of the nlme package and the weigths-parameter. Let's say that I hypothesize that the exam score of students (normexam) is influenced by their score on a standardized LR test (standLRT). Students are of course nested in "schools". These variables are contained in the

Subject really says it all. I took the practice exam linked from @PuppetLabs and I was a little bit surprised/caught-off-guard by the number of either PE or Console questions, neither of which I''ve ever used :-! I am taking the developer exam though, so I''m sure that will be at least a little different. Does it make sense to take the exam for an "open source puppet

Hello, I import datas from an file with: readLines But I need only a part of all measurments of this file. These are between two borders "START" and "END". Can you tell me the syntax of grep(), to choose values between two borders? My R Code was not succesful, and I can't finde anything in the help. Thank's a lot. Felix ######### R-CODE ################### file

I realize this is a CentOS mailing list but because it is based directly on RHEL, I would assume there are a few individuals who frequent the list that have passed the RHCE exam. I plan on taking the exam this March and was wondering if there are any tips you RHCEs out there could provide that may help me. Thanks! Dan -------------- next part -------------- An HTML attachment was scrubbed...

Hi there. I have a final exam coming up in a class that is heavily based in the R programming language. The teacher has provided to us a few questions to study in preparation for the exam. I was looking to see if anyone could help answer any or all of these questions. Your help is extremely appreciated! Thank you! - Spark 1. Write the first 6 lines of a hypothetical external data file named

Hi folks, Is there anywhere I can possibly get a model of the exam itself, maybe possible scenarios for the prac, etc? To people who have done the exam....any helpful hints ? Thanks,

Dear R experts: I have following data structure: student id, exam time and score. I want to create three new columes: 1 st before, 2nd before and 3rd before. For example, for student 1's 4th exam score is assumed to be influenced by his previous three cloest scores, which are 6, 9, and 10 in that order. For student 2's 5th exam score is assumed to be inflenced by her previous cloest

Hello. To someone who have done the dCAP exam. I would like to know about it: test and practises questions examples, difficulty level,... I'll be very grateful if somebody sends me an exam model. Thanks in advance

On Sat, 12 Aug 2006, takahashi kohske wrote: > Dear list members: > > I'd like to one-way repeated measured anova by using mlm. > I'm using R-2.3.1 and my code is: > > dat<-matrix( c(9,7,8,8,12,11,8,13, 6,5,6,3,6,7,10,9, > 10,13,8,13,12,14,14,16, 9,11,13,14,16,12,15,14), > ncol=4, dimname=list(s=1:8, c=1:4)) >

Hello, I have a problem with readLines. I have a data file with many informations added with a different number of measurments (example at the end). I only want to read the measurments witch start with "START OF HEIGHT DATA" and end with "END OF HEIGHT DATA". The difficulty is: -I want to read the file with "readLines", because the measurments have letters and

Dear CentOS users, is it possible to prepare for a certified (big North American Linux vendor) engineer exam with a CentOS install ? I have heard that the test contains questions on specific GUIs, are they included in the CentOS distribution? - Gergely

Hey all, I have a many-to-many relationship (Questions has_and_belongs_to_many Answers), and when I destroy the Question (the one) I also destroy all the Answers (the many). Since the following doesn''t seem to work for has_and_belongs_to_many: class Question < AR::Base... has_and_belongs_to_many :answers, :dependent => :destroy end I have this embedded in a transaction block

Hi all, will anyone please share me some material on RHCE/RHCT, I am fighting for the Quality Engineer in RedHat, and that may help a lot in the coming written exam. Many thanks and Merry Christmas! Cheers, Xiaobo -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos/attachments/20081224/57086264/attachment-0003.html>