#108 - Finland: peaks — MTK korkeuspiste is empty in the 2025 delivery; pick the source - art/ismap

art commented

2026-08-12 21:41:00 +00:00

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Scope: Finland's peaks — source decision first, then the layer.

What was measured (2025-04-03 delivery, on disk): MTK's elevation-point class korkeuspiste (kohdeluokka 52210) exists in MTK-muut (Lueminut.txt is explicit) but the whole-country file carries 0 rows — MML 2025 ships no surveyed elevation points. So "no via MTK today".

The real options (both national):

Spot heights derived from MML's DEM products on Paituli (dem2m / dem10m / dem25m) — the analogue of Iceland's haedarpunktar elevation markers (e.g. peaks = local maxima of the DEM above a threshold).
Named fells from the paikannimi register (already staged as fi_paikannimi — it feeds places) — but that gives named summits, a different layer shape from Iceland's unnamed elevation markers (R13 wants a line per layer, not necessarily the same semantics).

Decision needed: which shape, hence which source. Default recommendation: DEM-derived spot heights from dem25m/dem10m (cheap), named fells as a later refinement.

From #84 — catalogue line in docs/country-finland.md.

Scope: Finland's `peaks` — source decision first, then the layer. What was measured (2025-04-03 delivery, on disk): MTK's elevation-point class **korkeuspiste (kohdeluokka 52210)** exists in `MTK-muut` (Lueminut.txt is explicit) but the whole-country file carries **0 rows** — MML 2025 ships no surveyed elevation points. So "no via MTK today". The real options (both national): 1. Spot heights derived from MML's DEM products on Paituli (`dem2m` / `dem10m` / `dem25m`) — the analogue of Iceland's `haedarpunktar` elevation markers (e.g. peaks = local maxima of the DEM above a threshold). 2. Named fells from the `paikannimi` register (already staged as `fi_paikannimi` — it feeds `places`) — but that gives *named summits*, a different layer shape from Iceland's unnamed elevation markers (R13 wants a line per layer, not necessarily the same semantics). Decision needed: which shape, hence which source. Default recommendation: DEM-derived spot heights from `dem25m`/`dem10m` (cheap), named fells as a later refinement. From #84 — catalogue line in docs/country-finland.md.

art referenced this issue from a commit

2026-08-12 21:44:02 +00:00

#84: R5/R13 catalogue — contours, peaks, buildings and airports now have a line per country, and ten import issues are filed

art referenced this issue

2026-08-12 21:44:05 +00:00

#84: R5/R13 catalogue — contours, peaks, buildings and airports now have a line per country, and ten import issues are filed #111

art-bot referenced this issue from a commit

2026-08-13 04:45:56 +00:00

#84: R5/R13 catalogue — contours, peaks, buildings and airports now have a line per country, and ten import issues are filed

art commented

2026-08-13 05:24:03 +00:00

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I would say that prominent/named peaks is good enough as a baseline for the per-country requirements. What Iceland does is overkill (it's ok to keep it, but shouldn't be required in all countries).

art-bot was assigned by art

2026-08-13 05:24:08 +00:00

art referenced this issue

2026-08-17 07:53:53 +00:00

Shared peaks layer — fold is_haedarpunktar in (se #101 / pl #104 / fi #108 land into it) #152

art referenced this issue from a commit

2026-08-20 21:17:05 +00:00

Make peaks a shared layer, folding Iceland's in (issue #152)

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2026-08-20 21:17:08 +00:00

Closes #152 #199

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