This function allows to use several normalisation methods. It is a
wrapper for functions justRMA
,justGCRMA
and mas5
from packages affy
and gcrma
.\
The fast
parameter of the justRMA
can lead to different
results. If fast
is true, the Lim et al. correction is
applied. All expression values smaller than a threshold are put to the
same values, leading to a sharp pick on the left of the
distribution. Set fast
to false to obtain a standard GCRMA distribution.
If the filenames parameter is missing, then all the files of the
celfile.path are used.