NL: the full BRP series 2009-2026 - #237
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This was referenced Sep 11, 2026
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The older editions are not what the converter assumed. The 2009-2019 zips hold a FileGDB rather than a GeoPackage, so the target is globbed after extraction; their columns carry GWS_/CAT_ prefixes and there is no year column at all, so the edition supplies the year; and their shape area sits under a name the converter does not map, so it is derived from the geometry. 2020 is a GeoPackage rather than a zip, 2009 exists where the range started at 2010, and 2026 is a concept edition at a new PDOK location. Eighteen editions are built and published, 15.9M field-years. The jump from ~760k to ~1.35M parcels in 2023 is a real BRP delineation change upstream, not a conversion artefact. The local crop-mapping fixture makes the test hermetic. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01DVx9uQV2QPM8ecPAY3ZjXG
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Eighteen editions, 2009-2026, 15.9M field-years.
GWS_/CAT_prefixes, no year column (the edition supplies it) and no area column the converter mapped (computed from the geometry)Worth knowing when reading the series: parcel counts jump from ~760k to ~1.35M in 2023. That is a real BRP delineation change upstream, not a conversion artefact.
🤖 Generated with Claude Code
https://claude.ai/code/session_01DVx9uQV2QPM8ecPAY3ZjXG