Atlas · Uganda / Methodologies
METHODOLOGIES

Versions and cumulative updates

New downloads become new dataset versions; the old ones stay, and changes are listed.

Intermediate 1 min read updatesversionschange detection

Atlas is built so that updating never destroys history.

  1. Check. A scheduled job asks each source whether anything changed (record counts, edit dates, checksums).
  2. Download. Changed layers are downloaded as a new dated snapshot; unchanged layers are reused.
  3. Import as version N+1. The old version stays; the new one becomes "current".
  4. Compare. Records are matched by source id and listed as added, changed or removed in the What Changed page.
  5. Re-run the analysis. Recommendations and briefs are regenerated from the new data.

Schedule. Weekly checks and monthly refreshes are planned for after go-live. Until then each source is current to the date it was downloaded, shown on its dataset page.

Global Mangrove Watch releases new years roughly annually; Atlas adds them as new epoch datasets rather than overwriting.

Limits. The scheduled jobs are not running yet.

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