[BioC] looking for GRanges ggply like ddply

Ido Tamir tamir at imp.ac.at
Fri Mar 21 16:19:08 CET 2014

I need to aggregate Granges by metadata I would like to write something like:

ggply(granges, .(transcript_id, type), function(tt) {

is this possible?

thank you very much,

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