fullseye

zero_crossings_funct_1d — ONED function op

使い方

Indices where the function changes sign (HALCON zero_crossings_funct_1d).

Returns the integer indices i with sign(y[i]) * sign(y[i+1]) < 0 — the sample before each crossing. An empty input returns an empty index array (degenerate case, not an error).

Honest limitation: the test is a strict sign product, so a crossing that lands exactly on a zero sample ([-1, 0, 1]) is not reported, nor is a touch of zero without a sign change ([1, 0, 1]).

:param y: 1-D function (may be empty). :returns: int index array (possibly empty). :raises ValueError: non-1-D / NaN / Inf input.

参考(サンプルデータ・文献)

実行できる例(この op を実際に呼ぶ検証済みサンプル)

型が繋がる次の op(indices を入力に取れる)

peak_subbin

同カテゴリ(function)

create_funct_1d_array · create_funct_1d_pairs · smooth_funct_1d_gauss · smooth_funct_1d_mean · derivate_funct_1d · integrate_funct_1d · local_min_max_funct_1d · abs_funct_1d


Provenance: funct1d.py — ONED operator registry. この per-op ノートは tools/opdocs.py md が自動生成(手編集しない)。

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