mgrs grid extension - Githubissues

radiantearth / stac-spec

SpatioTemporal Asset Catalog specification - making geospatial assets openly searchable and crawlable

https://stacspec.org

Apache License 2.0

794 stars 178 forks source link

Closed matthewhanson closed 2 years ago

matthewhanson commented 3 years ago

Sentinel data uses the MGRS grid, as does HLS, likely others. Derived products from these are likely to use the MGRS grid as well.

Created repo https://github.com/stac-extensions/mgrs and will fill it in. Three fields:

mgrs:utm_zone mgrs:latitude_band mgrs:grid_square

matthewhanson commented 3 years ago

Two other things:

This can also be used to assign data to an MGRS grid based on the closest centroid, the data doesn't have to be a full tile in the grid. This way you can make a browsable catalog based on location first, then by time.
in the polar regions, mgrs:utm_zone is omitted, mgrs:latitude_band is A, B, X, or Z instead, and there is still a grid_square, just a reduced set of letters are used.

matthewhanson commented 3 years ago

Proposed extension up and ready for review: https://github.com/stac-extensions/mgrs

alexgleith commented 3 years ago

What do you think about having some kind of generic grid field?

In ODC we have odc:grid_code, which fits things like the MGRS code or Landsat's pathrow.

It would be awesome if there was one agreed name for a consistent footprint across STAC.

philvarner commented 2 years ago

@alexgleith Creating that here: https://github.com/stac-extensions/grid (might still be private)

m-mohr commented 2 years ago

Seems solved with two new extensions, great :-)