[Genome] Relationship between 'phastCons17way' and 'phastConsElements17way'?

[Gordon Robertson]

Hello

Could you clarify the relationship between (hg18) 'phastCons17way' (68MB gz)
and 'phastConsElements17way' (21MB gz) download data? We need to assess
conservation 'support' for large sets of ChIP peaks, so will be
programmatically querying either a local DB table or a local flat file. The
'elements' download appears to offer a more compact representation of the
larger datafile, but I have found no documentation on your web site that
describes how the full dataset is transformed into the compact one. I
apologize if this documentation exists and I've missed it.

Thank you for your help -

G
-- 
Gordon Robertson
Gene Regulation Informatics
Canada's Michael Smith Genome Sciences Centre
604-707-5900 x5416
www.bcgsc.ca