[BioC] RMA and NA values
Laurent Gautier
lgautier at altern.org
Tue Oct 12 03:16:10 CEST 2004
Benjamin Haibe-Kains wrote:
> Hi,
>
> In order to compare different types of affy chips, I construct manually
> AffyBatch object with NA values for the probes which are not in common.
> Unfortunately RMA doesn't deal with NA values. Is it possible to let the
> NA values during the normalization in the next release of RMA ? Or any
> kind of NA value management ?
Since you go for the creation of chimeric AffyBatch objects, what about
creating an appropriate chimeric cdfenvs as well ?
This means that only the probes you are interested in (i.e., non NA) are
found such a cdfenv.
(the packs altcdfenvs, makecdfenv, and matchprobes are likely contain
code or examples or interest)
L.
>
> Thanks a lot
>
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