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Available regions

This page describes what types of regions are offered in the ETM and whether they are available in the front-end dropdown, or only in the backend (through the API).

  1. Offical geographical regions are offered in the front-end
    Regions that are part of official geographical classifications can be offered both in the front-end and in the backend. For example, a country, a municipality, but also NUTS-regions or RES-regions can be offered in the front-end. See the CBS gebiedsindelingen for official classifications in the Netherlands. Regions are not offered in the front-end beyond the municipality level.

  2. Different regions are only offered in the front-end if they are MECE or can be incorporated in existing tooling
    For example, Northern Ireland is MECE (Mutually Exclusive, Collectively Exhaustive) with Great Britain (alternatively, with England, Wales and Scotland). Another example is the BUCH-region, which consists of the Dutch municipalities Bergen, Uitgeest, Castricum and Heiloo. This region can be offered in the front-end because it can easily be constructed with the same tool as provinces and RES-regions: by amalgamating municipalities.

  3. Only the most recent base year of a region is offered in the front-end
    If multiple base years are available for the same region in the backend, only the version with most recent base year is offered in the front-end. For example, for the Netherlands, only the 2019 version is shown in the front-end. The 2015 version is only available through the API.

  4. Consistent base years should be available both horizontally and vertically (at least in the backend)
    Horizontally meaning for instance between provinces, vertically meaning for instance between a province and its municipalities. In practice, this would mean that if the Dutch municipalities in the ETM are updated to 2022, a version should be available for the Netherlands for 2022. Dutch provinces and RES-regions should then be updated to 2022 as well (vertical consistency). However, if a version for the Netherlands is available for 2022, the 2019 version cannot be retired until all European countries are updated to 2022 as well (horizontal consistency).

  5. The backend might offer additional regions that diverge from the previous conditions
    This should only be the case when structural maintenance budget is available to maintain these and when an expiration date is provided.