You can accept your own answer in this case to provide closure.
Is there a good definition of the GAF format used by the program vg ?
Is this actually GFA format, as perhaps alluded to in this blogpost (not clear) ? https://ekg.github.io/2019/07/09/Untangling-graphical-pangenomics
I would strongly suggest avoiding creating a rival GAF format in bioinformatics, since if you google it you'll find GO annotation file format (see below).
GO Annotation File (GAF) format - Gene Ontology
Thanks
1 answer
To answer my own question, here is a good review page by Heng Li. It mentions PAF, GAF, GFA and rGFA.
https://github.com/lh3/gfatools/blob/master/doc/rGFA.md
There is now also a publication here:
https://genomebiology.biomedcentral.com/articles/10.1186/s13059-020-02168-z
Yes, it is the GAF as defined on that page that vg outputs. Note that it currently writes the <orientIntv> (as opposed to <stableIntv>) coordinates.
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