Hi, I need to remove genes with low expression values from a expression
matrix. I would like to remove those with an average of expression values
less than a certain cut-off. I was thinking in computing the average for
each row, create a list with the gene names for which their average is less
than the cut-off, and remove those genes from the initial matrix. However, I
have a couple of doubts that maybe you can help me with. Is there any
package or function that makes this easier? And, does anyone know which
cut-off to use for data normalized with RMA and for data normalized with
MAS5? Thanks,


-- 
Hernando Martínez Vergara

	[[alternative HTML version deleted]]

