Abstract: Various embodiments are described herein for systems and methods for allowing user at a client terminal to interacts with a graphical user interface having a DGGS globe to perform spatial analysis on DGGS spatial data based on a spatial query on unified spatial data that may be obtained from distributed geospatial data sources having different data formats. The spatial analysis results can include a resulting collection of cells that can be displayed on the DGGS globe and/or aggregated spatial statistics that can be displayed in a DGGS legend at the graphical user interface. In one aspect, the spatial analysis can be iteratively performed to obtain a refined resulting collection of cells and aggregated spatial statistics. In another aspect, the resulting cells and/or aggregated spatial statistics can be added to a geospatial data source that can be accessed by another client terminal that is performing other geospatial analysis.

Abstract: A digital Earth system based upon a hexagonal subdivision of a polyhedron representation of the Earth utilizes a computer-implemented method for assigning identifiers. The method comprises defining a tessellation of hexagonal cells, the tessellation having a first axis and a second axis, the first axis being perpendicular to a first side of the hexagonal cells, the second axis being 120 degrees from the first axis and being perpendicular to a second side of the hexagonal cells; selecting an origin cell for the tessellation and assigning a unique identifier comprising a first value and a second value thereto; and assigning a unique identifier to each cell other than the origin cell, the unique identifier for each of these cells comprising a first vector value and a second value, the first vector value and the second vector value being indicative of the location of the cell to the origin cell along the first and second axis respectively.

Abstract: A digital Earth system based upon a hexagonal subdivision of a polyhedron representation of the Earth utilizes a computer-implemented method for assigning identifiers. The method comprises defining a tessellation of hexagonal cells, the tessellation having a first axis and a second axis, the first axis being perpendicular to a first side of the hexagonal cells, the second axis being 120 degrees from the first axis and being perpendicular to a second side of the hexagonal cells; selecting an origin cell for the tessellation and assigning a unique identifier comprising a first value and a second value thereto; and assigning a unique identifier to each cell other than the origin cell, the unique identifier for each of these cells comprising a first vector value and a second value, the first vector value and the second vector value being indicative of the location of the cell to the origin cell along the first and second axis respectively.