Dear all, I am trying to analyse Illumina beadarray data produced by iScan for the first time. This scanner saves each array in two tiff images. As a first step, I used ProcessSwathData() function that deconvolutes the bead-level data and creates two files, swath1 and swath2 for the two tiff images. However, in the subsequent step, i. e. readIllumina function these two files are treated as if they are from two different arrays (although they belongs to one array). Is there any parameter we can pass to the readIllumina function to indicate that those two files belongs to one array. Any help in this regard is highly appreciated. Thanks Sunitha [[alternative HTML version deleted]]