similar to: Variability Plot For Toray Microarray Data

Hi, I am new to R, so I am unsure of the formula to set up this analysis. I would like to run a linear model with a continuous dependent variable (brain volume) and a continuous independent variable (age) while controlling for a categorical nuisance variable (gender). Age and brain volume are correlated. There are no gender differences in age but there are significant gender differences in brain

Dear expeRts, I would like to use a oneway_test (from package coin) to test whether two groups differ on various variables. The variables are encoded within a data frame. Unfortunately, I obtained an error, that I don't understand. Could you please help me ? Example: library(coin) y <- as.data.frame(matrix(rnorm(200), ncol=2)) group <- as.factor(unif(100)) lapply(y,

Dear R-users, I am wondering whether R implements a function returning the non central parameter of a t distribution (equivalent of the TnoncT function from SAS), given /x/ a value from a t distribution, /df /the degrees of freedom and /p/ the probability of x under this distribution. Thanks a lot, Matthieu -- Matthieu Dubois, /Ph.D/. /Student/ Cognitive Neuroscience Unit, UCL,

Dear useRs, I have written a function that implements a Bayesian method to compare a patient's score on two tasks with that of a small control group, as described in Crawford, J. and Garthwaite, P. (2007). Comparison of a single case to a control or normative sample in neuropsychology: Development of a bayesian approach. Cognitive Neuropsychology, 24(4):343?372. The function (see

Dear useRs, I have written a very simple function to compute some probabilities on words (function is below). The function includes a which() statement applied to a vector of characters (word.split): sapply (word.split, function(x) which(letters==x)). This statement worked as expected when used outside the global function : > word <- "hello" > (word.split <-

Hi, I am running cwrsync. 2004/05/11 [93] rsync error: some files could not be transferred (code 23) at /home/lapo/packaging/tmp/rsync-2.5.7/main.c(383) I am uncertain as to what this path statement is about in the above error message. /home/lapo/packaging/tmp/rsync-2.5.7/main.c(383) Thanks, Pat -- Patricia Palumbo DuBois & King, Inc. ppalumbo@dubois-king.com 802-728-4113 | ext 322

Dear Christian, thanks for writing. I am no longer active in driver development, so I am forwarding your question to the NUT user list. The people on the list are very helpful. Best wishes, -- Peter Christian Dubois wrote: > > Hi there, I found this document on the internet and it was very useful > for me (http://www.mscs.dal.ca/~selinger/ups/backups.html), thank you. > > I

Dear Rusers, I tried to implement a function comparing mean scores between one subject (the patient) and a group a control subjects. The function returns attended results, but I also obtained the following warning : Warning message: the condition has length > 1 and only the first element will be used in: if (substr(fp, 1, 1) == "<") fp else paste("=", fp) Maybe

Dear All, We recently reinstalled our computing cluster. We were using CentOS 5.3 (32 bits). It is now CentOS 6.3 (64 bits), installed from the CentOS 6.2 x64 CD, then upgraded to 6.3. We have some issues with the memory needs of our running jobs. They require much more than before, it may be due to the switch from 32 to 64 bits, but to me this cannot explain the whole difference. Here are

I?ve got a 512M machine and a 330M ( uncompressed ) initrd image. How can I mount the ramdisk? Normal booting seems to want to copy the entire initrd image into a Ramdisk, thus requiring 2X the memory. So what happens is the kernel boots correctly and I get, RAMDISK: ext2 filesystem found at block 0 RAMDISK: Loading 330000 blocks [ 1 disk ] into ram disk And then I never see the light of day after

Hi, We are rebasing our audio compression subsystem using OPUS rather than SPEEX. The platform is Android but this piece is written in C code: we need to support armv5/armv7/x86 architectures.... and we use the released opus-1.1beta package from here<http://downloads.xiph.org/releases/opus/opus-1.1-beta.tar.gz>. A lot of our OPUS build system + code to drive the audio compression has been

I've noticed quite a few messages relating to large data sets bedeviling R users, and having just had to program my way through one that actually caused a "Bus error" when I tried to read it in, I'd like to ask two questions. 1) Are there any facilities for aggregation of data in R? ( I admit that this will not do much for the large data set problem immediately) 2) Is there any

I am refering to a function call like this: >data(iris) >x <- svmlight(Species ~ ., data = iris) I tried to see the content of it by typing: > Species ~ . but it gives nothing. How can I see it's content ? - P.Dubois

One possibility ist boxplot(sapply(ListOfNames, get, env = .GlobalEnv)) Hope that this helps Thomas -----Urspr??ngliche Nachricht----- Von: Lefebure Tristan [mailto:Tristan.Lefebure at univ-lyon1.fr] Gesendet: Mittwoch, 7. Juli 2004 10:34 An: r-help at stat.math.ethz.ch Betreff: [R] boxplot a list of objects Hi list, #Imagine we have vectors of different length (in practice 100 vectors):

Is there any way to set a field name that is different than the method name used to populate it? My example: In Rails, I''m using acts_as_ferret on a Article model that has_many Authors. I want to be able to index authors'' names with each article. Since @article.authors yields an array of Author objects (and not an indexable string), I''ve created this method in my

Has anyone succeeded on using WINE on PPC computer via SuSE Linux 7.0 (or Darwin?) Thanks, Tony K.

Hi everybody, I''m trying to use the prawn gem into a new rails3 application on debian. What I did: As root: - install rubygems, from http://rubyforge.org/frs/download.php/73882/rubygems-1.4.2.tgz - gem install rails - gem install prawn - gem install pdf-reader - gem list | grep prawn => prawn (0.8.4) prawn-core (0.8.4) prawn-layout (0.8.4)

Hi, I have been using R to do multiple analyses of variance with two covariates, but recently found that the results in SPSS were very different. I have check several books and web resources and I think that both methods are correct, but I am less familiar with R, so I was hoping someone could offer some suggestions. Oddly simple ANOVA is the same in SPSS and R. Including covariates improves the

Hello helpful R folks, I am simply trying to graph a quarter circle centered at the origin in the first quadrant. When I set the xlim of the plot to the radius of the circle, the plot appears correct. However, I'd like to see a slight extension of the axes beyond the domain of the function itself. When I do this, a portion of the plot seems to be missing by the edge of the domain. Here is

I?ve got a 512M machine and a 330M ( uncompressed ) initrd image. How can I mount the ramdisk? Normal booting seems to want to copy the entire initrd image into a Ramdisk, thus requiring 2X the memory. So what happens is the kernel boots correctly and I get, RAMDISK: ext2 filesystem found at block 0 RAMDISK: Loading 330000 blocks [ 1 disk ] into ram disk And then I never see the light of day after