Reading Expression from a write.exprs file

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osman@mit.edu ▴ 40

@osmanmitedu-364

Last seen 10.3 years ago

Hey, After running analysis on an Affybatch, and saving the result using write.exprs into a certain file, how can I read this information back into an eset? TIA Osman

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ADD COMMENT • link 21.5 years ago osman@mit.edu ▴ 40

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Rafael A. Irizarry ★ 2.3k

@rafael-a-irizarry-205

Last seen 10.3 years ago

you need to use read.table and the new("ExprSet", ...). for more read the help files on read.table and exprSet do you know about "save"? using save and load R objects using the functions "save" and "load". On Thu, 26 Jun 2003 osman@mit.edu wrote: > Hey, > > After running analysis on an Affybatch, and saving the result using write.exprs > into a certain file, how can I read this information back into an eset? > > TIA > > Osman > > _______________________________________________ > Bioconductor mailing list > Bioconductor@stat.math.ethz.ch > https://www.stat.math.ethz.ch/mailman/listinfo/bioconductor >

ADD COMMENT • link 21.5 years ago Rafael A. Irizarry ★ 2.3k

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osman@mit.edu ▴ 40

@osmanmitedu-364

Last seen 10.3 years ago

I had tried doing that but it didn't work: > esetdata <- read.table(file="myfile.txt",sep="\t") > neset<- new("exprSet",exprs = eset) Error in validObject(.Object) : Invalid "exprSet" object: Invalid object for slot "exprs" in class "exprSet": got class "data.frame", should be or extend class "matrix" thanks

ADD COMMENT • link 21.5 years ago osman@mit.edu ▴ 40

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what you want is more like neset<- new("exprSet",exprs = as.matrix(esetdata)) read the help file and/or vignette for more info On Thu, 26 Jun 2003 osman@mit.edu wrote: > I had tried doing that but it didn't work: > > > > esetdata <- read.table(file="myfile.txt",sep="\t") > > > neset<- new("exprSet",exprs = eset) > Error in validObject(.Object) : Invalid "exprSet" object: Invalid object for > slot "exprs" in class "exprSet": got class "data.frame", should be or extend > class "matrix" > > thanks > > _______________________________________________ > Bioconductor mailing list > Bioconductor@stat.math.ethz.ch > https://www.stat.math.ethz.ch/mailman/listinfo/bioconductor >

ADD REPLY • link 21.5 years ago Rafael A. Irizarry ★ 2.3k

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