[Gdal-dev] Extent of a set of tiles

[darrepac]

Dear all,

I have a set of tiles. I would like to know the polygon coordinates which
describe the extent of this set of tiles.
Is there a way to make this with GDAL? I saw the possibility to make a
rectangular extent but here it is more a polygon (as the set of tiles
doesn't represent necessary a rectangle)

thanks
Pascal
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