Nice simulation to get a feel for which values of Spearman correspond to which of Kendall (tau-b). Does anyone possibly know of a similarly illustrative simulation that compares the values (and its robustness) of Kendall and Spearman in the presence of ties? One would probably expect that the values of Kendall remain more robust, the more one has to process e.g. measurements that were "ordinalized" by categorization; but one rarely sees this visualized so nicely.