Fig. 4From: Visualizing phylogenetic tree landscapesTime to Convergence. The average time in seconds it took for each combination of cost function and optimization algorithm used for the NLDR analysis of the three mtDNA RF-distance matrices to reach convergence. Each graph showing the results for the three mtDNA data sets is divided into four panes representing four cost functions (KRU = Kruskal-1; NOR = Normalized; NLM = Nonlinear Mapping; and CCA = Curverlinear Components Analysis)Back to article page