Fig. 5: Incidence matrix reordered with the map ranking.
From: Ranking nodes in bipartite systems with a non-linear iterative map
Examples of matrices with rows and columns sorted according to the x and y ranking for three different map exponents, γ = −3, −1.12, −1, of the same mutualistic system (Robertson 1292 matrix). A black dot corresponds to the entry 1, while a white dot to the entry 0. γ ≃ −1.12 is the value which maximizes the extinction area, as shown in Fig. 2d. The exponents less or equal than −1.12 are in the condensation phase, see Fig. 4a, and present the typical border of ones that separates a right-bottom area of zeros from the rest of the matrix.
