Top: histogram of groups and clusters matched (blue) and unmatched (gold) with DISPERSE nodes as a function of their M₂₀₀ in the CFHTLS-W1 field. The two histograms are stacked on top of each other so that their sum is the total number of groups and clusters in the mass bin. Bottom: distribution of the distances to the skeleton of groups that is not located at a node in CFHTLS-W1. The dashed line is the chosen radius for filaments (r = 1 cMpc). See Fig. 6 for details of the symbols.