dem_ecef_to_geodetic — DEM `geodesy` op

• Data kinds: points → points

• Call: import demops; demops.dem_ecef_to_geodetic(xyz) (or opsdem.get("dem_ecef_to_geodetic"))

Usage

> This operator's description has not been translated yet. The original text follows as it is.

ECEF → 測地座標。返りは `(..., 3) の (緯度[度], 経度[度], 高さ[m])`。

Bowring (1976) の閉形式に近い解法。往復(測地→ECEF→測地)の誤差は

実測で緯度・経度が 1e-12 度未満、高さが 1e-7 m 未満。

地心球座標が欲しいだけなら、`r = |xyz|` と

`geocentric_lat = asin(z/r)` で足りる —— ただしそれは測地緯度ではない

(両者は最大 0.19 度、距離にして約 21 km ずれる)。この op が返すのは

地図や GPS と同じ測地緯度のほう。

Detailed usage guide

• dem_terrain_analysis family guide

References (sample data, literature)

• Sample-data catalog (download URLs / licences) — 2-D uses skimage.data (BSD/public domain) plus synthetic images; 3-D lists download URLs for real data sources (Stanford, PDS, …).

• Operator provenance and references — the sources of the research/methods this op family came from.

• The canonical algorithm (author, year) and its uses are named in the family usage guide above.

Runnable examples (verified samples that actually call this op)

• (none yet)

Ops the type connects to (they accept `points` as input)

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Same category (`geodesy`)

dem_geodetic_to_ecef · dem_geocentric_grid · dem_earth_curvature_drop · dem_cell_size_webmercator · dem_geodetic_slope

*Provenance: demops.py — DEM operator registry. This per-op note is generated by tools/opdocs.py md (do not hand-edit).*

dem_ecef_to_geodetic — DEM geodesy op