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Hi all, I have this microarray large microarray data set (ALL) from which I would like to subset or extract a set of data based on a factor ($mol.biol). I looked up some example of subsetting in, picked up two commands and tried both but I got error messages as follows > testset <- subset(ALL, ALL$mol.biol %in% c("BCR/ABL","ALL1/AF4")) >> Error in

...within user/edit controller I get the following error message in my dev. log: Exception during setup of read_multipart_with_progress: undefined class/module Role I''m looking at the source code which is producing this error <at> http://server2.tecweb.inf.puc-rio.br:8000/projects/hyperde/trac.cgi/browser/branches/adapt/vendor/actionpack/lib/action_controller/cgi_ext/multipart_progress.rb?rev=26 But to be honest, I''m not sure where/why this pops up. Any suggestions? Thanks. Ilya -- Posted via http://www.ruby-forum.com/.