[BioC] IMAGE Question - GeneChip Marker

Ben Bolstad bolstad@stat.berkeley.edu
14 Feb 2003 13:26:48 -0800

> Hi:
> I recently tried generating the cel image form a cel file of type 133A. I am
> noticing that the GeneChip HGU 133 A mark appears on the bottom left as
> opposed to the Top left of the image. 
> Any ideas on why this is the case.
> Thanks
> Shyam

by default, image() commands have the x and y coordinates x=0,y=0 in the
bottom left hand corner. Since the x-y coordinates given by the cdf
files have the top left hand corner at x=0,y=0 you get the result that
you observed.