tree op• 数据种类:table → table
• 调用: import fullseye as fs; fs.ledger.tree_sholl(tree, radii=None, n_radii=50, plane=None, center=None)(要直接调用实现,import treemorph; treemorph.tree_sholl(tree, radii=None, n_radii=50, plane=None, center=None);从台账取用则 opsgraph.get("tree_sholl"))
> 该算子的说明尚无译文,以下照原文给出。
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`.
• 示例数据目录(下载 URL / 许可证) —— 2-D 用 skimage.data(BSD/公有领域)加合成图,3-D 给出真实数据源(Stanford/PDS 等)的下载 URL。
• 算子来历与参考文献 —— 该算子族所依据的研究/方法出处。
• 算法的正典(作者・年份)与用途见上面的族使用指南。
• 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 作为输入)graph_edge_consensus · graph_core_persistence · tree_morphometry · tree_run_length
tree)tree_from_swc · tree_morphometry · tree_run_length
*Provenance: treemorph.py — GRAPH 算子登记表。本条目由 tools/opdocs.py md 自动生成(请勿手工编辑)。*
© 2026 Kazufumi Furuse — Fullseye operator documentation. Licensed under Apache-2.0.