I want to query NCBI's GEO to get all gene expression series (GSExxxx) GEO Data Sets (GDSxxxx) corresponding to a given platform (e.g., GPL570, which corresponds to Affy's U133 Plus 2.0 chip). I can clearly screen-scrape that GPL570 page (specifically the section that notes there are 1683 "Series" on this platform), but I'd rather not.
I've checked out the page on programmatic access to GEO, but I can't find a query that will work. Any E-Util whizzes know how this would be done?
EDIT: Aargh, after further review, I realize I need GEO Data Sets (GDSxxx), not the GSEs. Following Neil's answer below for GSEs, I've scanned the Meta(gpl) list but can't find the analogous entry for GDSs. Anyone know how I can do this?
In this case I can use an eUtils query for GPL570, but since my downstream analysis is in R I'd much rather use GEOquery...
I don't think you can get to GDS using GPL in GEOquery; you'll have to fall back on EUtils. You can use GPL570[ACCN] in your query.