- to apply authalic conversion to the WGS84 ellipsoid instead of the spherical approximation
- a rotation of the base icosahedron of 0.05 degrees to align the vertices better with water bodies through a specific parameter in DGGRID
In practice this means that IGEO7 as described in the original publication is not the same as the ellipsoid-adjusted IGEO7 version, though both can be generated through dggrid4py, and DGGAL only provide the corrected ellipsoidal version
In practice this means that IGEO7 as described in the original publication is not the same as the ellipsoid-adjusted IGEO7 version, though both can be generated through dggrid4py, and DGGAL only provide the corrected ellipsoidal version