CZ: editions 2019-2026 - #239
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The 2026 download puts the shapefile in a subfolder, where earlier editions kept it at the root, so the conversion looked for a file that was there all along. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01DVx9uQV2QPM8ecPAY3ZjXG
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The archives before 2023 are a different release. GPZ_DP calls the crop name PLODINA_NA and the declared area DEKL_VYMER, carries no application date, and identifies nothing per row: ENTITA_ID is the land block and repeats once per crop declared on it — 242,754 distinct over the 282,462 rows of 2019. Rename the columns, keep ENTITA_ID as block_id, count the fields positionally for the id, and date the edition by its campaign year. The 2020 release then fills PLODINA_ID in 5,804 of its 297,680 rows and names the crop in all of them, in the ministry's own vocabulary — it writes "Pšenice ozimá" where EuroCrops writes "Pšenice setá ozimá", so cz_2023.csv matches only a third of the names. The codes come from a name table built out of the 2019, 2021 and 2022 editions: 268 names, none carrying two codes, agreeing with the 5,804 rows of 2020 that do have one, and covering all but 0.004% of them. cz_2023.csv maps the code list of the 2023 release. The older editions declare 120 codes outside it (11.4% of their rows: fallow, ware potatoes, spelt, poppy, ryegrass, the alfalfa and clover mixes) and the newer ones 47 more (0.64%: the hemp varieties the ministry lists one by one, grasses, vegetable-and-herb mixes, and the strips and landscape features that are no crop at all). 68 of them are the same crop the current editions still declare under another code, so they take the HCAT that code already has; the rest are mapped against hcat3.csv. Without the table the backfilled editions carry no HCAT for a ninth of their fields; with it, none of the eight editions leaves a single crop unmapped. Last, the 2026 edition lists one declaration twice, once per land block it straddles, with the whole declaration's geometry both times. Keep the first of each such repeat; a repeat whose shape differs is not this case and still fails the identity check. The test harness gains the "<id>#<label>" form, as in #243, to run the second and third editions from the same folder of input files. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01DVx9uQV2QPM8ecPAY3ZjXG
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CZ 2019-2022 support