Pre-Generated ISEA DGGs

The pages below contain links to ISEA DGGs generated using DGGRID Software. The grids are in ARC/INFO generate format, which is a simple text file format. All vertices are given in longitude and latitude in decimal degrees. Each file contains the cell boundaries for the entire globe at the specified resolution. Since cell boundaries are only true regular polygons in the ISEA projection space 3 additional points were added to each edge to better preserve the true boundary shape after projection into longitude/latitude coordinates.

Grids are available for the following ISEA DGG topologies:

Aperture 3 Hexagon
Aperture 4 Hexagon
Aperture 4 Diamond
Aperture 4 Triangle

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