[BioC] Bioconductor Digest, Vol 87, Issue 10

[Saroj K Mohapatra]

Earlier you mentioned downloading the data from ArrayExpress. That 
should have the probe annotation file. Another option is to download the 
annotation file from the chip manufacturer's web site.

For example:
I am investigating the array express entry E-MEXP-2620. The Array design 
file from 
http://www.ebi.ac.uk/microarray-as/ae/files/A-MEXP-1444/A-MEXP-1444.adf.txt 
contains the probe annotation. Of course this file needs to be 
downloaded, formated in a suitable program (e.g., Excel), the extra 
headers need to be removed, etc. Keep three columns as suggested.

Best,

Saroj

avinash gupta wrote:
> thank u Saroj
>                          sorry to say that i dont have probe 
> annotataion file .so please tell where to and how to download this file .
>         thank you
>  
> regards
> avinash