Voronoi diagrams decompose space into cells depending on specific center points. In this case, the cells are geometrically designed in the way that the distance between all points within the cell to its own center point is shorter than to the center of the adjacent cells.
In the field of cartography, this technique is applied on the basis of two-dimensional space for the distribution of information around a reference point.
The Austrian wind load map according to EN 1991‑1‑4 and ÖNORM B 1991‑1‑4 in the Dlubal Software online tool "Snow, Wind, and Seismic Zone Maps" uses a planar Voronoi diagram to distribute the tabular loads by reference location to regions.