Tesselations and rasters

For every space time ‘point’, every combination of spatial point and amoment in time of the spatiotemporal domain, we have a single value for the range.

Topological models: data model that guarantees no inadvertent gaps or overlaps of polygonal coverage. They store boundaries between polygons only once and register which polygonal area is on either side of the boundary. It’s best to work with a topological model and derive a set of multipolygons instead of reconstructing topolgy.

Tesselations

A sub-division of a space (area, volume) into smaller elements by ways of polygons (triangles, squares, hexagons).

Rasters are examples of tesselations using squares.