Figure 1

Entries distribution and grids. Toy example based on a matrix of 100 entries with environment $\mathcal{E}$ of size |M| = 5. A: the distribution of entries, partitioned with a 0-grid (solid lines) and with a 1-grid (dashed lines). Alternated grey and green colors are used to identify quantile regions. Grids are defined with Δ = .20, and therefore, each quantile region contains exactly 20 entries. B: elements $V,Z\in \mathcal{N}$, represented by 5 character values in the matrix, are plot in the distribution: 5 circles and 5 diamonts represent V and Z, respectively. For each $X\in \mathcal{E}$, A(V,X) = A(Z,X)and this implies an environmental score S _env (V,Z) = 1. C: contrary to B, here the 5 pairs of entries, A(V,X)and A(Z,X), are not necessarily equal nor highly similar (that is, belonging to the same quantile) and they are indicated by a straight line linking entries positions.S _env (V,Z)is expected not to be maximal.