[BioC] More than one weight with marrayRaw class

[Mike Schaffer]

Using marrayRaw, Is there a way to combine two columns of data from a 
GenePix file into the Weight for a spot?

For instance I would like to read in the "Flag" and "F Pixels" columns 
from the GenePix file to filter out all flagged spots and spots below a 
threshold size.  It doesn't appear this is possible without modifying 
the marray classes.

Thanks.

--
Mike