ISEA9R DGGRS
for ne_10m_geography_regions_polys
(View JSON or ECON representation)
Back to list of DGGRS
An Axis-Aligned Discrete Global Grid Reference System based on the Icosahedral Snyder Equal Area projection, rotated clockwise 60 degrees, then shearing the x dimension by 1/sqrt(3) times the y advance (30 degrees skew), effectively turning the root diamonds formed by the icosahedron triangular faces joined at their bases into rectangles, then dividing into 3x3 at next zoom levels (aperture 9).
URI: http://www.opengis.net/def/dggrs/OGC/1.0/ISEA9R
CRS: OGC:153456
ISEA9R DGGRS zones