Function to read IDAT files into beadarray.
A vector of file paths to the idat files that are to be read.
This function allows IDAT files, produced during the BeadArray scanning,
to be read directly into
beadarray. This removes the requirement to
use Illumina's GenomeStudio software to convert such files into an ASCII format
before they can be processed.
The expection is that IDAT files from expression BeadArrays will be read using this function. However, this is not currently checked for explicitly and it is possible that files from other platforms may be read successfully.
If files from a two-colour array are to be read, they should all be listed
idatFiles argument. The function will determine two-colour data
is present and act accordingly. If unequal numbers of green and red files are
supplied, or the names of the array sections do not match, the function will
IDAT files often contain probes that are used as internal controls and are not annotated by Illumina. Such probes are not included in the output of this function.
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