Fig. 4: Qualitative evaluation of an exemplar sample of mapotypes.
From: A fragment-based approach for computing the long-term visual evolution of historical maps

Each row corresponds to a mapotype, and each tile corresponds to a mapel within that mapotype. For each mapotype, a sample of mapels is drawn at random from the corresponding year range subset. When no instance of the mapotype is present for a given year range, the space is left blank.