Before running the analyses using the tiling array data sets, we need to extract
and to format the raw probe hybridzation signals from the .CEL
files produced
by the Affymetrix platform.
To do so, we need to have the text version of the .CEL
files and not the binary version.
If you don't know which version you have, you can easily check your files by using the command
`file [my_file]`
. If the output is something like data
or ASCII text
then it's ok.
Otherwise if the output contains the term binary
you have first to convert the
.CEL
files by using the .CEL
converter tool released by Affymetrix (you can download a Windows
version.of this tool from our website http://www.ens-lyon.fr/LBMC/gisv//index.php?option=com_content&task=view&id=37&Itemid=27).