Once you select H3 hexagon, a new parameter appears called H3 bin resolution where you can pick a resolution value from 0, the largest bins, to 15, the smallest bins.Use the drop-down menu to select H3 hexagon as the Bin shape type.Search for the tool: Generate Tessellations.Open Map Viewer and access the Analysis pane.To create an H3 hexagon tessellation in ArcGIS Online: Using H3 hexagons in the Generate Tessellations tool Each tessellation has a GRID_ID field representing its location that is common among any H3 generation software. Therefore, tessellations of the same resolution will never overlap. H3 hexagons are generated at predetermined locations based on their bin resolution. One benefit of H3 hexagons is that the tessellations will always align. Want to learn more about H3 hexagons? Check out these resources on Uber’s Hexagonal Hierarchical Spatial Index and the ArcGIS Pro tools that already have H3 hexagons: Generate Grids and Hexagon and Generate Tessellations. The largest resolution, 15, produces the smallest hexagons at approximately 0.895 m² in size, as defined by the resolutions on the H3 library documentation page. The largest hexagons that can be created from this tool are resolution 0 and have an average area of 4,357,449.42 km². Hierarchal H3 hexagons at three resolutions Hierarchal hexagons are sized such that every larger polygon is divided into seven equal-sized smaller hexagons that all have an equal distance to the center of their neighbors, as seen in the image below. H3 hexagons are an open-source, hierarchical tiling index that generates hexagons at predetermined locations on the globe based on one of sixteen different resolutions. To learn more about the power of the hexagon tessellation in analysis, check out the ArcGIS Pro topic Why hexagons? and blog article Got five minutes? Get to know hexagons. Hexagons are also less prone to the effects of distortion caused by the curvature of the Earth because of their many sides and obtuse angles. Having neighboring polygons equidistant helps to reduce sampling biases that might be observed using other shape types. Hexagons are one of the most optimal shapes for spatial analysis due to their tessellation pattern being completely equidistant to all their neighbors (a feature not shared by other common tessellation types, such as triangle or square geometries). With the June 2023 release of ArcGIS Online, you can now use the Generate Tessellations tool to generate H3 hexagons, an open-source, hierarchical spatial indexing system created by Uber in 2018.
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