用于统计计算网络中的各种拓扑特性graph Analysis Toolbox

This is a list of standardized variable names used throughout the functions and demos. Scalars. Q - Cardinality of faces set in a graph. K - Dummy constant. N - Cardinality of node set in a graph. M - Cardinality of edge set in a graph. P - Number of coordinate dimensions of a node set. scale - The weighting function parameter. stop - The recursion stop parameter. X/Y/Z - Dimensions of an image or region (e.g., [X Y Z]=size(img)). Matrices. A - The NxN adjacency matrix. D - The NxN diagonal matrix of node degrees. img - The current image. L - The NxN Laplacian matrix. R - The MxN edge-node incidence matrix. Vectors. d - The Nx1 vector of node degrees. vals - The NxK vector of K-dimensional nodal values (e.g., RGB, with K=3). weights - The Mx1 vector of edge weights. Graph components. points - An NxP list of node coordinates. edges - An Mx2 list of edges (containing indices to the node set). faces - A QxK list of polygonal faces with order <= K. Structs. imgGraph - Struct containing the filters for importing an image to a space-variant graph. imgGraph.pntMap - A Kx2 list of the K points in the image plane used to filter an image for importing. imgGraph.breakpoints - A 1xN list of the breakpoints in imgGraph.pntMap referring to the points corresponding to different nodes. imgGraph.filtWeights - A Kx2 list of the filter weights for each of the K points in imgGraph.pntMap. voronoiStruct - Struct containing the information necessary to perform Voronoi visualization on a space-variant image. voronoiStruct.pts - Kx2 list of coordinates for the vertices of the Voronoi cells for the node set, where K > N. voronoiStruct.index - List of nodes that are represented in the visualization (i.e., nodes with a Voronoi cell within the convex hull of the node set). voronoiStruct.faces - List of faces representing the Voronoi cells, to be used by patch.m.