Dear all,

I have a data set consisted of 4 cell types with each cell type having 3
replicates. I find the unique signature genes of each cell types using
decideTests (see following). I only want the top, say 20 signature probes
that satisfy my thresholds.  I tried to use "number=20" as for the
"topTable" function with "decideTests", but it gave me the an error (see
below). Is there a way that I can define the number of upregulated probes
for outputting in decideTests?

Thank you in advance,
Wendy

Code:
results <- decideTests(fit[,-1], p=0.10, lfc=log2(2),number=20)
Error in decideTests(fit[, -1], p = pval, lfc = log2(foldchange), number =
20) :
  unused argument(s) (number = 20)

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