User: Vitalina Komashko

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Last seen:
15 years, 8 months ago
Joined:
15 years, 8 months ago
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v*********@bionet.nsc.ru

Posts by Vitalina Komashko

<prev • 6 results • page 1 of 1 • next >
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Problem with updating Bioconductor
... When I received a letter about recent changes I try to update Bioconductor packages, but I get the following error message: > update.packages(CRAN=getOption("BIOC")) trying URL `http://www.bioconductor.org/bin/windows/contrib/1.9/PACKAGES' Content type `text/plain' length 35889 bytes opened URL d ...
written 15.7 years ago by Vitalina Komashko60
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How to filter up- and down-regulated genes?
... Dear Sean, Thank you very much for your fast reply. Yes, I am using a t-test and I supposed that I should do exactly that you advised. Problem is that I do not know how I could implement it in R : to filter genes according the sign of their t-statistics and adjusted p-value. Thank you very much. ...
written 15.7 years ago by Vitalina Komashko60 • updated 15.7 years ago by Naomi Altman6.0k
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How to filter up- and down-regulated genes?
... Hello! I analize Affymetrix chips. There are two groups of transgenic and nontransgenic mice with 3 samples in each group. I normalised my data using rma, and calculated an adjusted p-value using multtest package. I have found out that there are about 64 differentially expressed genes between these ...
multtest written 15.7 years ago by Vitalina Komashko60 • updated 15.7 years ago by Sean Davis21k
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Names of the samples(CEl file)(2)
... Good morning, I'm still having problems with the sampleNames for my CEL files. I have already tried to indicate the sample names in ReadAffy function but it does not help: > nm<-c("sampleA","sampleB","sampleC") > data.test<-ReadAffy(widget=TRUE,sampleNames=nm) > sampleNames(data[1]) [ ...
written 15.7 years ago by Vitalina Komashko60 • updated 15.7 years ago by James W. MacDonald52k
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Names of the samples (CEL file)
... Hello! I read my CEL files using: >data.test<-ReadAffy(widget=TRUE) So I would like to look at the first sample name of my data: >sampleNames(data.test[1]) [1] "C:/Program Files/R/rw1090/rdata/JS1999081101AA.CEL" Why are the sample names displayed as a path to the corresponding file? How co ...
written 15.7 years ago by Vitalina Komashko60 • updated 15.7 years ago by Adaikalavan Ramasamy1.8k
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Reading CEL file information
... I have some problem with reading my CEL files (hu6800). I use ReadAffy(widget=TRUE) for reading files, but when I read all files, I see an Error: Error in initialize(value, ...) : Cel file C:/Program Files/R/rw1090/rdata/2001.CEL does not seem to be of HU6800 type But when I'm trying to add these f ...
hu6800 written 15.7 years ago by Vitalina Komashko60

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