[BioC] illumina: how to retrieve annotation information out of tif-files?

[Christian Kohler]

Dear list,

I recently started dealing with illumina-data, therefor I am currently
working through the example datasets provided by the 'beadarray' vignette.
Here, information on the annotation of the chip used is stored in
'Human_WG-6.csv' (considering the 'BeadLevelExample' data).

When dealing with Affymetrix *.CEL.[gz] files, it is possible to
directly extract chip information via 'gzip -dc foo.CEL.gz | grep
DatHeader'.
which yields stl
'DatHeader=[38..46177]  . . . ..       HG_U95Av2.1sq    
             '

I am now wondering if such kind of information can also be extracted out
of illumina tif-files (if for whatever reason the annotation file is nor
available).

Thanks for any help.

Cheers
/Christian/