Hi I'm having difficulty with accessing the swirl(zebrafish) data from the document about Bioconductor's marrayNorm package (Dudoit, Yang Aug 2002) I get the following message when I use the maCompPlate command Creating a new generic function for "plot" in package .GlobalEnv Loading required package: marrayTools > data(swirl) > maPlate(swirl) <-- maCompPlate(swirl, n = 384) Error in factor(z, levels = 1:nlevels(x), labels = levels(x)) : invalid labels; length 0 should be 1 or 2 In addition: Warning message: "-" not meaningful for factors in: Ops.factor(maCompPlate(swirl, n = 384)) > swirl.norm <-- maNormMain(swirl, f.loc = list(maNormLoess(x = "maA", + y = "maM", z = "maPrintTip", w = NULL, subset = TRUE, span = 0.4)), + f.scale = NULL, a.loc = maCompNormEq(), a.scale = maCompNormEq(), + Mloc = TRUE, Mscale = TRUE, echo = FALSE) Error in -maNormMain(swirl, f.loc = list(maNormLoess(x = "maA", y = "maM", : Invalid argument to unary operator I recently down loaded R and Bioconductor Using the Bioconductor Release 1.1 (Bioconductor_1.1.tar.gz) however I've used it in the past with no problem by downloading the marrayNorm, Classes, Input tar files seperately with no problem Would this problem be due to the program or the way I've installed it ? Any help would be much appreciated Thanks Jason

Hi Jason, Use <- instead of <-- for the assignment operator. Sandrine On Fri, 6 Dec 2002, Jason Skelton wrote: > > Hi > I'm having difficulty with accessing the swirl(zebrafish) data > from the document about Bioconductor's marrayNorm package > (Dudoit, Yang Aug 2002) > I get the following message when I use the maCompPlate command > > Creating a new generic function for "plot" in package > .GlobalEnv > Loading required package: marrayTools > > data(swirl) > > maPlate(swirl) <-- maCompPlate(swirl, n = 384) > Error in factor(z, levels = 1:nlevels(x), labels = levels(x)) : > invalid labels; length 0 should be 1 or 2 > In addition: Warning message: > "-" not meaningful for factors in: Ops.factor(maCompPlate(swirl, n = 384)) > > > swirl.norm <-- maNormMain(swirl, f.loc = list(maNormLoess(x = "maA", > + y = "maM", z = "maPrintTip", w = NULL, subset = TRUE, span = 0.4)), > + f.scale = NULL, a.loc = maCompNormEq(), a.scale = maCompNormEq(), > + Mloc = TRUE, Mscale = TRUE, echo = FALSE) > > Error in -maNormMain(swirl, f.loc = list(maNormLoess(x = "maA", y = "maM", > : Invalid argument to unary operator > > > I recently down loaded R and Bioconductor > Using the Bioconductor Release 1.1 (Bioconductor_1.1.tar.gz) > > however I've used it in the past with no problem by downloading the > marrayNorm, Classes, Input tar files seperately with no problem > > Would this problem be due to the program or the way I've installed it ? > Any help would be much appreciated > > Thanks > > Jason > > _______________________________________________ > Bioconductor mailing list > Bioconductor@stat.math.ethz.ch > http://www.stat.math.ethz.ch/mailman/listinfo/bioconductor >