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Add kriging interpolation page#1093

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hlherrera-gis:kriging-docs
Open

Add kriging interpolation page#1093
hlherrera wants to merge 1 commit into
MapServer:mainfrom
hlherrera-gis:kriging-docs

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@hlherrera

@hlherrera hlherrera commented Jun 22, 2026

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Adds a documentation page for the kriging interpolation layer, accompanying the feature PR MapServer/MapServer#7535.

en/output/kriging.txt (added to the Output Generation toctree) covers:

  • what kriging adds over IDW: a geostatistical model that also yields a per-pixel uncertainty estimate;
  • the localized NNGP approach (predict each pixel from its m nearest samples);
  • the KRIGING_* PROCESSING keys (model, type, neighbors, range, sill, nugget) and the two output bands (BANDS=1 mean, BANDS=2 standard deviation);
  • an example mapfile;
  • a worked New Zealand rainfall example comparing IDW vs kriging on identical data, plus the kriging uncertainty band: structured like the IDW page, as requested in the feature PR review.

Tagged .. versionadded:: 8.8. Depends on MapServer/MapServer#7535 being merged.

Document the kriging CONNECTIONTYPE: the localized NNGP method and its two
output bands (predictive mean and standard deviation), the PROCESSING reference,
and a self-contained, reproducible worked example. The example ships
downloadable files (the complete mapfile, two sampling networks, city points and
a simplified coastline) that render standalone with no external dependencies,
comparing IDW, the kriging mean and the kriging standard deviation for a dense
and a clustered sampling network.
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