There are some cases when a gal file has the grid-row-column in this order as described by the header of the file: Block\tColumn\tRow\t... (I think that usually it's Block\tGrid\tColumn\t...) and in this particular case the function read.Galfile() will read the Row and Column columns incorrectly. I've tested this with R 1.9.1 and marray 1.5.14 . Cheers, Daniel Iordan Systems Security Specialist and Application Developer Tel: (416) 703-3989 daniel.iordan@iobion.com www.iobion.com

There are some cases when a gal file has the grid-row-column in this order as described by the header of the file: Block\tColumn\tRow\t... (I think that usually it's Block\tGrid\tColumn\t...) and in this particular case the function read.Galfile() will read the Row and Column columns incorrectly. I've tested this with R 1.9.1 and marray 1.5.14 . Cheers, Daniel Iordan Systems Security Specialist and Application Developer Tel: (416) 703-3989 daniel.iordan@iobion.com www.iobion.com