How many landmarks are enough to characterize shape and size variation? (original) (raw)
Fig 7
Sampling curves for subsampled empirical data with respect to characterizing centroid size variation.
(a) 2-D was wing data [24]. (b) 3-D crocodylian skull data [25]. (c) 3-D condylar surface semi-landmark data of placental mammal femora [26]. (d) 3-D baboon skull data. Each gray line indicates fit values from one iteration of subsampling. Thick, dark line denotes median fit value at each number of landmarks. Numbers within plots are the number of landmarks at median fit value of 0.90, 0.95, and 0.99.