annotation version / genome

[kasperdanielhansen]

Currently, seqinfo is empty. It should be populated based on the genome we use.

Is there a way to store the annotation (ie. gencode) inside the object? Not sure how, perhaps look at the txmeta package. This would be great to be able to do.

[kasperdanielhansen]

Likewise some link to the annotation. Columns of the rowRanges are basically given by the annotation source and it would be good to have some link to the documentation, for example, what does the tag column specify (no need to explain).