[BioC] Format NCprobe index file gcrma

[Hans van Leeuwen]

Hi,

I would like to use my own set of negative control probes with gcrma. I
can't find an example or explanation with the format of the NCprobe index
file in the function description or gcrma instructions.

Is it just a file with the x and y coordinates in columns? Does the
bg.adjust.gcrma function read the file directly, or do I need to read the
file first and create an object?

Thanks for any help.

Best,

Hans van Leeuwen