I am trying to analyze my data based on section 3.3 of edgeR and I got stuck in the fist part
design <- model.matrix(~0+Group)
colnames(design) <- levels(Group)
fit <- glmQLFit(y, design)
and getting this error :
Error in terms.formula(object, data = data) : object 'y' not found
What 'y" stand for?