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Create H3 Grid

This node creates hexagonal grid inside the input polygon using H3. Your input polygon(s) will be automatically convert to a single polygon by calculating the union of all polygons and projected to EPSG:4326 before creating the grid.

Options

Geometry column: Select the geometry column to use.
Zoom level: The zoom level of the grid from 0 to 15 (default value is 8). The bigger the zoom level, the smaller the hexagon. If the zoom level is too small, the hexagon might be too big to fit in the input polygon which will result in an error. A very small zoom level might result in a very large output table even for smaller input polygons. For more details about the zoom levels refer to Tables of Cell Statistics Across Resolutions.

Input Ports

: Input table with the geometry to fill with the H3 grid.

Output Ports

: Output table with the H3 Cell Indices and hexagons column.

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Installation

To use this node in KNIME, install the extension Geospatial Analytics Extension for KNIME from the below update site following our NodePit Product and Node Installation Guide:

v5.2

A zipped version of the software site can be downloaded here.

Plugin provider: SDL, Harvard, Cambridge US

Plugin version: 1.3.0.202412051033

On NodePit since: 2024-12-11

Last update: 2024-12-18

KNIME versions: From v5.2 to v5.2

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