select_points — REPRCONV index op

• Data kinds: points × indices → points

• Call: import reprconv; reprconv.select_points(points, indices) (or opsreprconv.get("select_points"))

Usage

A point set `(N,3) and indices (M,) → the sub-set (M,3). The consuming side of indices`.

> The detailed description below is the original text — the summary and the headings are translated.

`indices を産む op は 6 つあるのに(iss_keypoints` /

`farthest_point_sampling / alpha_shape_boundary / find_peaks` /

`zero_crossings_funct_1d / cad_visible_faces`)、**添字を食う単入力 op が

1 つも無かった** —— 添字は「元の集合とセットで初めて意味を持つ」ので、

単入力では原理的に作れない。よってこれは 2 入力にしてある。

Args:

points: (N, 3)。

indices: (M,) の非負整数、N 未満。

Returns:

(M, 3) float64。

Raises:

ValueError: 範囲外の添字 / 形状不正 / 非有限。

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)

• representation_conversion — py -3.11 examples/representation_conversion.py

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

points_zyx_to_keypoints_uv · points_to_position · flow_apply · points_to_gaussians

Same category (index)

indices_to_labels · labels_to_indices

*Provenance: reprconv.py — REPRCONV 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.