Gypaets/polygonAdja​cencyMatrix

Version 1.0.0.0 (1.94 KB) by Gypaets
Polygon adjacency matrix calculation for triangulations using MATLAB.
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Updated 29 Jun 2017
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% Definition
polygonAdjacencyMatrix calculates the adjacency matrix of the polygons
defined with a triangulation's connectivity list cL. Fast and fully
vectorized approach.
% Usage
Input:
cL: (n x 3) connectivity list of the triangulation.

Output:
pAM: (n x n) polygon adjacency matrix.
% Example
% Create triangulation from 100000 random points
pointsC=rand(100000,2);
X=pointsC(:,1);
Y=pointsC(:,2);
tri=delaunayTriangulation(X,Y);
% Extract connectivity list
cL=tri.ConnectivityList;
% Calculate polygon adjacency matrix
tic
pAM = polygonAdjacencyMatrix(cL);
toc

Cite As

Gypaets (2024). Gypaets/polygonAdjacencyMatrix (https://github.com/Gypaets/polygonAdjacencyMatrix), GitHub. Retrieved .

MATLAB Release Compatibility
Created with R2015b
Compatible with any release
Platform Compatibility
Windows macOS Linux
Categories
Find more on Delaunay Triangulation in Help Center and MATLAB Answers
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Version Published Release Notes
1.0.0.0

Repo update.
To view or report issues in this GitHub add-on, visit the GitHub Repository.
To view or report issues in this GitHub add-on, visit the GitHub Repository.