Hi Yogesh,

I do not know if there is a straightforward manner of doing this with the
ArrayExpress package. You can try to modify the function queryAE from the
package.
Given certain keywords, queryAE outputs the following annotation: experiment
ID, presence of raw/processed data in the repository, date of release,
PubmedID, species, experimental design, but you can probably start from the
script to output the experimental factors of all experiments without
keywords.

I am not sure it would work as I have never tried to do such a thing but in
theory it should. You can also probably contact the ArrayExpress database
people directly to ask them if there is a way to do this outside of R.

Best wishes,
Audrey


On Fri, Feb 4, 2011 at 12:49 AM, Yogesh <yogeshp08@gmail.com> wrote:

> Hello,
>
> How can I get ALL the Experimental Factors (Factor name, Factor values)
> from
> the Experiments on ArrayExpress?
>
> Thanks,
>
> -Yogesh
>
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