Day 10 - Grid comparison of different global grid systems

https://twitter.com/allixender/status/1327586063829839872

_images/day-10-grids.png

Data

No real data, but grid generators: I generated the ISEA4H (hexagons), ISEA4T (triangles) and saved as GeoPackage. I did this with the help of a little library I am working on:

https://github.com/allixender/dggrid4py/

It uses GeoPandas and DGGRID - a free software program for creating and manipulating Discrete Global Grids. DGGRID version 7.0 was released in September, 2019.

https://www.discreteglobalgrids.org/software/

Then I used Uber H3 and Landcare Research/Manaaki Whenua RhealPixDGGS-py.

Each of these 4 grid systems I generated two subsequent resolutions to depict the “aperture” and parent child spatial relation ships.

Eventually I used GeoViews to provide a static orthographic (say globe) basemap view.

The Jupyter notebook (view here) is provided in my GitHub repo.