an object generated by the function fclust.

an integer. The integer indicates the number of component clusters to take into account. It can be lower than or equals to the optimum number fres$nbOpt of component clusters.

a string, that is used as the first, reference part of the title of each graph.

a list, that include opt.ass = list(sample, who). This option plot modelled and predicted by cross-validation performances versus observed performances, for a small sample of assemblages randomly drawn (sample), or for given, identified assemblages chosen by the user (who). The item order in list is any.

• sample: an integer. This integer specifies the number of assemblages to randomly drawn in the assemblage set, the plot as the option opt.perf = list("prd"). All chosen assemblages are plotted on a same graph.

• who: a list of assemblage names. The list contains the names of assemblages to plot. Each assemblage is plotted on a specific graph. This option is useful when ssemblage performances are observed over several experiments.