This story was originally published on HackerNoon at:
https://hackernoon.com/open-data-is-not-a-product-heres-what-it-takes-to-make-it-one.
Two GeoJSON files from a government portal, turned into a public service for 106 communes. The hard part wasn't the code — it was the integrity calls.
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Governments publish open data and call it done — but "published" isn't "usable." I turned two GeoJSON files into a
trilingual water-quality site covering all 106 Luxembourg communes. The pipeline (fetch → transform → auto-refresh)
was the easy part. The hard part was the integrity calls: dropping sentinel values, refusing to fake a number for the
capital, and shipping "I don't know" as a real feature.