Terrain, buildings and airports exist for Iceland alone, and nobody else's catalogue says why #84
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art/ismap#84
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Found auditing every country against
docs/country-requirements.md(#77). Flags R13 — a layer one country has and its neighbours do not is a parity gap until proven otherwise.What the data says
Seven layers exist for Iceland and no other country:
contourspeaksbuildingsairportsairport_pointssettlements,settlement_pointsplacesissueThe first five are real capability. They are also the reason Iceland's map reads as a finished map and the other three read as basemaps: contour lines, named peaks, building footprints and airports are most of what makes a topographic map look topographic.
Where the other countries stand
conf/fimap.yamlrecords skipping MTK's contours (33 GB), terrain edges (28 GB), bogs (18 GB), rock (4 GB) and buildings (4 GB) as "out of scope for Sweden parity" — a size decision, not a data one. That reasoning reads oddly now: it names as the parity target the country with fewer layers, which is how a gap becomes permanent.What this issue is for
Not to import five layers into three countries. It is to make R5/R13 true: each country's available → imported → worth-importing catalogue must state, for each of
contours,peaks,buildingsandairports, either yes and here is the source and the size or no and here is why. Once that exists, the actual imports are separately-scoped issues with a known cost.Finland's entry is half-written already — the sizes are known, only the verdict needs revisiting.
Acceptance
docs/country-sweden.md,docs/country-poland.mdanddocs/country-finland.mdeach carry a line per layer in their catalogue, and any that are worth importing have their own issue.Contours, peaks, airports, airport_points, buildings should all be layers that other countries have. I was hesitant to implement contours because they are always a very heavy layer and slow everything else down, but they should exist.
It will be extra exciting to see if the contour lines will match on the Sweden-Finland border (even here, I want to use the national data, not default to some global DEM).
Result is in #111 — #111; the review note is the PR description. Ten follow-up issues filed from the catalogue lines: #101–#110.