Metadata for oligo bioconductor package
So I am going through the oligo User guide (see: https://www.bioconductor.org/packages/release/bioc/vignettes/oligo/inst/doc/oug.pdf) and I encountered this unfinished line on page 12:
metadata <- data.frame(labelDescription=c('wafer', 'experiment', 'complex'), channel=factor
I was wondering what else is supposed to be on this line? Am I just suppose to close the parentheses or should there be other information here?
Thank you!
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There is an issue with pdf viewer, the complete line is :
metadata <- data.frame(labelDescription=c('wafer', 'experiment', 'complex'), channel=factor('_ALL_'))Thank you. Is there any other way than creating metadata as shown in the user's guide? Why we are doing this? I mean dont' we have already phenodata in our expressionset objects after loading to R environment via read.celfiles ?