mvpa2.misc.surfing.volsurf.VolumeBasedSurface¶
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class
mvpa2.misc.surfing.volsurf.
VolumeBasedSurface
(vg)¶ A surface based on a volume, where every voxel is a node. It has the empty topology, meaning there are no edges between nodes (voxels)
Use case: provide volume-based searchlight behaviour. In that case finding neighbouring nodes is supposed to be faster using the circlearound_n2d method.
XXX make a separate module?
Attributes
average_node_edge_length
Average length of edges associated with each face center_of_mass
Computes the center of mass edge2face
A mapping from edges to the face that contains that edge face_areas
face_edge_length
Length of edges associated with each face face_normals
faces
Returns: neighbors
Finds the neighbours for each node and their (Euclidean) distance. nfaces
Returns: node2faces
A mapping from node indices to the faces that contain those nodes. node_areas
node_normals
nvertices
Returns: vertices
Returns: Methods
circlearound_n2d
(src, radius[, metric])Parameters: vg: Volgeom.volgeom or str or NiftiImage
volume to be used as a surface
Attributes
average_node_edge_length
Average length of edges associated with each face center_of_mass
Computes the center of mass edge2face
A mapping from edges to the face that contains that edge face_areas
face_edge_length
Length of edges associated with each face face_normals
faces
Returns: neighbors
Finds the neighbours for each node and their (Euclidean) distance. nfaces
Returns: node2faces
A mapping from node indices to the faces that contain those nodes. node_areas
node_normals
nvertices
Returns: vertices
Returns: Methods
circlearound_n2d
(src, radius[, metric])-
circlearound_n2d
(src, radius, metric='euclidean')¶
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