Genome Coordinate use for Beacon Queries

The coordinate system that should be used throughout GA4GH standards is 0-based half open.

So in a sequence of

ACCGTCGA

… the exact match for GTC would be

start: 3,
end: 6

… due to interbase coordinates:

 A C C G T C G A
| | | | | | | | |
0 1 2 3 4 5 6 7 8

A detailed documentation of the standard can be found on the SchemaBlocks site.

@mbaudis 2019-03-14
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