similar to: RE: R performance questions

Hi, all-- I wanted to start a (new) thread on R speed/benchmarking. There is a nice R benchmarking overview at http://www.sciviews.org/other/benchmark.htm, along with a free script so you can see how your machine stacks up. Looks like R is substantially faster than S-plus. My problem is this: with 512Mb and an overclocked AMD Athlon XP 1800+, running at 588 SPEC-FP 2000, it still takes me

Hello useRs, I'm trying to install bioconductor on ubuntu edgy eft and R 2.4.0. I have some error messages during installation, in particular for the package "affy" : "Error: package 'affy' required by 'makecdfenv' could not be found" I have tryed to install 'makecdfenv' with the command : getBioC("makecdfenv") But I have this message

Dear All, There is a question I met when using Affy package in Bioconductor. I asked it in BioC and didn't get any responses. Sorry to post again: Could anyone tell me how to draw a deep-blue Affymetrix image through Image() function in Affy package? The default settings of image() draw me a black-white image and if I modify it to 256 colors, I get a somehow yellowish image. The reason

Hi, I have built R (current development version) and BioConductor 1.7 with portland group compiler on a AMD Opteron. When I ran qc assessment on Affymetrix latin square data set, I got the following output, Loading required package: affy Loading required package: Biobase Loading required package: tools Welcome to Bioconductor Vignettes contain introductory material. To view,

I am developing a package that imports some functions from another package. The imported package (qcc) does not have a namespace and this is causing problems with loading of my package, which has a namespace. Is there a workaround to allow loading the namespace-less package? I searched the archives and found a suggestion that the package should be included in the Depends list, but this has not

Hi, I have been using the prcomp function to perform PCA on my example microarray data, (stored in metric text files) which looks like this: 1a 1b 1c 1d 1e 1f ...................................................4r 4s 4t g1 1.2705 1.2766 ...........................................................2.0298 g2 0.1631

Dear R-help Hi, I'm Won. I try to do microarray normalization by R. I use justRMA function within affy package, got error about segment fault. I don't know why it happen. I attached error below. Please help me. Thank you. Cheers, Won ======================= OS : Redhat linux Cpu : intel xeon X5570 Memory : 26Gb & OS : Ubuntu Cpu : intel q6600 Memory : 8Gb

Hi, I am trying to install the BioC package from bioconductor onto a Windows Server 2003 machine. I can connect to bioconductor and when I run the getBioC("affy","release") function it starts to download but then it stops with the following error: Error: unable to create temporary directory 'C:\Program Files\R\R-2.2.1\release\file1eb26e9' The download just ends

Hello, I have a problem with read.affy.mixed function. I want to read in together a set of CEL files from chip types Affymettrix HGU133A_2 and HGU133_Plus_2. I have my files to be read in in one directory together with a white space delimited file describing them (covdesc). In this directory I give a command: > merge <- read.affy.mixed() Error in merged[[i]] : subscript out of

Hi again, I have been playing around with the order of loading packages, and as far as I can tell, there's nothing specific with affycoretools that's causing my Rgui to crash (i.e., shuts down and the Microsoft 'please send error report' box pops up). Instead, it has something to do with the order & type of packages that are loaded that add items to the menu bar by

hi all i started recently using R and i found myself stuck when i try to analyze microarray data. i use the "affy" package to obtain the intensities of the probes, i have two CTRs and two treated. HG.U133A.Experiment1.CEL HG.U133A.Experiment2.CEL HG.U133A_Control1.CEL HG.U133A_Control2.CEL 1007_s_at 2156.23115 467.75615 364.60615 362.11865

Hi All, Sorry if this is a repost (a quick browse didn't give me the answer). I wonder if there are packages that can do the feature selection and classification at the same time. For instance, I am using SVM to classify my samples, but it's easy to get overfitted if using all of the features. Thus, it is necessary to select "good" features to build an optimum hyperplane (?).

Hi, I have a question concerning the analysis of some affymetrix chips. I downloaded some of the data from GEO GSE11324 (see below). In doing so I'm stuck after I identified the probesets with significant changes. I have problems in assigning probeset specific gene names as well as getting the genomic coordinates. Furthermore I have no clue how to deal with the fact, that most genes have

My machine has 8GB memory. I had quit all other programs that might take a lot of memory when I try the script (before I post the first message in this thread). The cdf file is of only 741 MB. It is strange to me to see the error. On Mon, Dec 28, 2009 at 2:38 AM, Wolfgang Huber <whuber at embl.de> wrote: > Dear Peng Yu > > how big is the RAM of your computer? You could try with

Hello, I am trying to install affy package in R as follow: >R CMD INSTALL -l lib ~/rstuffs/affy_1.4.32.tar.gz Then I get an error at the end: Warning message: There is no package called 'Biobase' in: library(package, character.only = TRUE, logical = TRUE, warn.conflicts = warn.conflicts, [1] "ProgressBarText" [1]

Mark, there is a fdr website link via Yoav Benjamini's homepage which is: http://www.math.tau.ac.il/%7Eroee/index.htm On it you can download an S-Plus function (under the downloads link) which calculates the false discovery rate threshold alpha level using stepup, stepdown, dependence methods etc. Some changes are required to the plotting code when porting it to R. I removed the

Hello, I have an SVM model previously calibrated using libsvm R implementation from the e1071 package. I would like to use this SVM to predict values, from a Java program. I first tried to use jlibsvm and the "standard" java implementation of libsvm, without success. Thus, I am now considering writing data in files from my Java code, calling an R program to predict values, then gather

Hi, I decided to upgrade to 1.8 today... :-) Anyway, we are writing our own package that is dependent on a bioconductor library - 'affy'. I've checked and when I fire up R, library(affy) behaves as expected... so it all seems to be installed and OK... In the DESCRIPTION file in my package source I have the line: Depends: affy When I run R CMD check simpleaffy I get to: ... *

Hi all, I tried to do normalization of affymetrix data with bioconductor on a Linux server. When I read in the cel files all seemed ok. But the next step caused an error. With Win XP all works fine. Did anyone experience similar problems? Thanks, Thomas > PI <- ReadAffy() > PI AffyBatch object size of arrays=712x712 features (14 kb) cdf=ATH1-121501 (??? affyids) number of

Dear list, I?m using R embedded in another program (coded in tcl/tk) under Windows Vista. In this context I don?t launch Rgui.exe but rather Rtem.exe. Now I have a problem finding libraries not specifically installed as administrator (and which are not in the path ?program files? but in Contacts\Documents of the current user). To be precise, the user launching my tcl/tk program can?t find