Discrete Global Grid Systems
Ver padrões:
- OGC de 2017, http://docs.ogc.org/as/15-104r5/15-104r5.html
- ISO de 2021, https://www.iso.org/standard/32588.html
- OGC de 2021, https://docs.ogc.org/as/20-040r3/20-040r3.html#cell
PS: outros ISO, https://www.iso.org/standard/70742.html e outros OGC, https://docs.ogc.org/as/20-040r3/20-040r3.html