If i want to merge those datasets as it is of different platform , should i do that before normalisation or merging the dataset after normalising it separately would be convenient. Before normalising the data if i try to merge it, it is giving me this error-

Error in affyio::read_abatch(filenames, rm.mask, rm.outliers, rm.extra, : Cel file ./GSM771152.CEL.gz does not seem to have the correct dimensions.

Can you suggest me a solution to this.

Thank You