Hi, I am running RMA on eight ME 430 chips in the cluster(Linux). I got the following message. Error in if (a[k]>b[k] return (1) else if (a[k]<b[k] return="" (-1)="" :="" missing="" value="" where="" true="" false="" needed="" in="" addition:="" warning="" message:="" nas="" introduced="" by="" coercion="" execution="" halted="" what="" does="" it="" mean?="" what="" should="" i="" do?="" but="" it="" works="" on="" my="" pc="" (windows="" 2000="" piii="" 128m="" ram).="" your="" help="" is="" greatly="" appreciated.="" lang="" chen="" research="" assistant="" department="" of="" biostatistics="" section="" on="" statistical="" genetics="" ryals="" public="" health="" building,="" suite="" 343a="" university="" of="" alabama="" at="" birmingham="" 1530="" 3rd="" ave="" s="" birmingham,="" alabama="" 35294="" tel="" 205-9757772<="" div="">

could you also give us the results of traceback() called right after the error occurs. btw, it is not generally a good idea to assign the results of a function to a variable of the same name. On Fri, 2003-08-29 at 08:21, Lang Chen wrote: > Hi, there > > R version 1.71 > BioC version 1.2. > > library(affy) > data<-ReadAffy() > rma<-rma(data) > write.exprs(rma,file="rma.xls") > > Thank you for your help > > Lang Chen > > > > -----Original Message----- > From: Ben Bolstad [mailto:bolstad@stat.berkeley.edu] > Sent: Friday, August 29, 2003 9:08 AM > To: Lang Chen > Subject: Re: [BioC] error while running RMA > > > Can you tell me the version of the package that you are using and what > functions you are calling to compute RMA? > > > On Fri, 2003-08-29 at 05:49, Lang Chen wrote: > > Hi, > > > > I am running RMA on eight ME 430 chips in the cluster(Linux). I got the > > following message. > > > > Error in if (a[k]>b[k] return (1) else if (a[k]<b[k] return="" (-1)="" :=""> > missing value where TRUE/FALSE needed > > In addition: Warning message: > > NAs introduced by coercion > > Execution halted > > > > What does it mean? What should I do? > > > > But it works on my PC (Windows 2000 PIII 128M RAM). > > > > Your help is greatly appreciated. > > > > Lang Chen > > > > Research Assistant > > Department of Biostatistics > > Section on Statistical Genetics > > Ryals Public Health Building, Suite 343A > > University of Alabama at Birmingham > > 1530 3rd Ave S > > Birmingham, Alabama 35294 > > Tel 205-9757772 > > > > _______________________________________________ > > Bioconductor mailing list > > Bioconductor@stat.math.ethz.ch > > https://www.stat.math.ethz.ch/mailman/listinfo/bioconductor -- Ben Bolstad <bolstad@stat.berkeley.edu>