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.