Discrete Global Grid Research at Terra Cognita


This page is the beginning of what we hope will be a constantly growing resource on grids for conducting scientific analysis on data spatially distributed on the surface of the earth, which we call "Discrete Global Grids." In particular these pages contain information on the Icosahedral Snyder Equal Area Aperture 3 Hexagonal (ISEA3H) grid which was developed by researchers at the Terra Cognita Lab in the Department of Geosciences at Oregon State University, and the Department of Computer Science at Southern Oregon University.

Please drop us an email if you have questions about our research or would like to be informed when these pages are updated.

The following resources are currently available:


This research is sponsored by the environmental statistics research project conducted as part of the Environmental Monitoring and Assessment Program (EMAP). EMAP is a research effort of the United States Environmental Protection Agency directed at improving monitoring and assessment methodology. Although the research is conducted wholly or in part by the U.S. Environmental Protection Agency under cooperative agreement CR821672 with Oregon State University, it has not been subjected to the Agency's peer and administrative review, and hence does not necessarily reflect the views of the Agency.

Additional funding has been provided by the Biodiversity Research Consortium under cooperative agreement PNW-92-0283 with the USDA Forest Service.


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