H3 Hexagonal Index

Index raster or vector data onto an H3 hexagonal grid. For a single raster, samples values at H3 cell centroids. For a stack of rasters with a shared grid, aggregates each raster into one column of a wide H3-indexed table (the publisher pattern — see `rasters` input). For vectors, assigns H3 cell IDs to point or polygon features. Enables consistent spatial comparison across regions at configurable resolutions.

ID	analysis_h3_index
Domain	geo
Category	analysis
Type	raster-to-table
Version	1.1.0

view yaml ◦view github ◦

Parameters

resolution: integer · H3 resolution (0-15). Auto-detected from pixel size if null.
stats: array · default mean · Aggregation statistics for single-raster mode. Applied to all pixels that fall within each H3 cell.
column_names: array · Output column names for stack mode (one per `rasters` element). If omitted, names are derived from raster filenames.
aggregation: string · default sum · Stack-mode aggregation. "sum" for additive measurements (area, count, mass — values across pixels in a cell are summed); "mean" for intensive measurements (temperature, suitability index — values are averaged).
nodata_filter: string · default positive · Stack-mode source-value filter: "positive" (keep > 0; standard for area / count), "finite" (drop NaN + nodata sentinel), or "none" (pass through; caller has pre-cleaned).