The data files must be in Affymetrix MAS 4.0 tabular file format.
Multiple files are processed into a single dataset. The sample order of the imported dataset is determined by the order of the source sample data files listed in the Import Data dialog.
The file headers are discarded.
Gene identifier information is retrieved from the Probe Set column of the first file and is stored as an Affymetrix Identifier.
Gene expression data is retrieved from the Avg Diff column and the reliability measure is translated from the Present/Absent/Marginal P/A/M flags (P=0.0; M=0.5; A=1.0) of each file in the order they are placed in the Import Data dialog.
Selecting a Template for Data Import
Importing Multiple Files With One Sample Each