Fig. 3.

Example layout of a synthetic coherence network with coherence matrix as shown in Table 1. a Voronoi diagram showing vertex positions with vertex labels within the cells and Voronoi connections between vertices. Vertices are spatial neighbors if they are 4-connected, e.g., the spatial neighbors of vertex f are vertices, b, e, g, and j. b Layout preserving the vertex positions. Vertices are represented by solid circles and lines represent coherences between vertices, while the coherence values are encoded by the color of the lines (see the color bar on the right). c Manual layout of the significant coherence graph without considering the vertex positions