profile_chord_frame — PROFILE frame op

• Data kinds: pairs → table

• Call: import profileops; profileops.profile_chord_frame(contour) (or opsprofile.get("profile_chord_frame"))

Usage

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

弦(最も離れた 2 点)を見つける。返りは dict。

翼型の慣行どおり、最も離れた 2 点を前縁・後縁とみなす。どちらが前縁かは

その点の近傍の曲率が大きいほうで決める(前縁は丸く、後縁は尖る)。

Returns:

dict: `le / te(座標)、le_index / te_index`、

`chord(長さ)、angle_deg`(弦の向き)。

Detailed usage guide

• profile_metrology 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)

• profile_shape_inspection — py -3.11 examples/profile_shape_inspection.py

Ops the type connects to (they accept table as input)

—

Same category (frame)

profile_normalise · profile_resample

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

© 2026 Kazufumi Furuse — Fullseye operator documentation. Licensed under Apache-2.0.