Hi I do not know rma but from help page boxplot requires as input a formula, list (only some list of numerics), data frame or numeric vector. I am not sure if your object is one of these. If not you need to convert it to object which is acceptable for boxplot.
Regards Petr [email protected] napsal dne 17.09.2009 08:29:43: > Hi, > > I m not able to plot normalized data(normalization by rma) using boxplot. I > don't know why? > basically, object(formed of normalized data) belong to ExpressionSet class. > > It is showing error > > Error in x[!xna] : object of type 'S4' is not subsettable > In addition: Warning messages: > 1: In is.na(x) : is.na() applied to non-(list or vector) of type 'S4' > 2: In is.na(x) : is.na() applied to non-(list or vector) of type 'S4' > > > Now, how to plot? Should I have use another function? > > By > Sukhbir Singh Rattan > > [[alternative HTML version deleted]] > > ______________________________________________ > [email protected] mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.

