tree op• 資料種類:table → table
• 呼叫: import fullseye as fs; fs.ledger.tree_sholl(tree, radii=None, n_radii=50, plane=None, center=None)(要直接呼叫實作,import treemorph; treemorph.tree_sholl(tree, radii=None, n_radii=50, plane=None, center=None);從台帳取用則 opsgraph.get("tree_sholl"))
> 該運算子的說明尚無譯文,以下照原文給出。
Sholl analysis: segments crossing spheres (3-D) or circles (a projection) around the root.
`radii are the shell radii (ascending, positive); if omitted, n_radii` shells at
the mid-points of equal steps up to the largest distance from the centre (never exactly
on a node's distance). A shell passing exactly through a node is ambiguous under
rounding — a rotation may move that node by one ulp to either side. `plane=None` measures in 3-D;
`plane="xy" | "xz" | "yz"` drops the third axis first — what a single image sees.
`center` defaults to the root position.
A segment (parent-child) crosses radius `r` when its end points lie strictly on
opposite sides of `r (the endpoint rule). Returns radii, crossings` (int array),
`max_crossings, radius_at_max and integral` — the exact area under the whole
continuous Sholl curve, computed from the segments' intervals (independent of where
the shells are placed).
Identities: in 3-D the crossings are invariant, integer for integer, under any rotation
about the centre; and `integral equals sum |d_child - d_parent|` (the tests also
check that the mid-point sum of the sampled crossings converges to it — a second
implementation).
Raises `ValueError: not a tree table; plane` not one of None/xy/xz/yz;
radii not 1-D, not finite, not positive or not strictly increasing; `n_radii < 1`.
• 範例資料目錄(下載 URL / 授權) —— 2-D 用 skimage.data(BSD/公有領域)加合成圖,3-D 給出真實資料源(Stanford/PDS 等)的下載 URL。
• 運算子來歷與參考文獻 —— 該運算子族所依據的研究/方法出處。
• 演算法的正典(作者・年份)與用途見上面的族使用指南。
• poc_swc_tree_truth — py -3.11 examples/poc_swc_tree_truth.py
• poc_worm_neurites_grow — py -3.11 examples/poc_worm_neurites_grow.py
table 作為輸入)graph_edge_consensus · graph_core_persistence · tree_morphometry · tree_run_length
tree)tree_from_swc · tree_morphometry · tree_run_length
*Provenance: treemorph.py — GRAPH 運算子登記表。本條目由 tools/opdocs.py md 自動產生(請勿手動編輯)。*
© 2026 Kazufumi Furuse — Fullseye operator documentation. Licensed under Apache-2.0.