Figure 2
Behavior of the difference-map algorithm (β = 0.75) starting at a varying distance from the solution for test cases 4bsj (left panels) and 4zqk (right panels). (a)–(d) show trajectories of individual replicates, with initial error specified by the circular variance (V) of the phase-error distribution as indicated. The real-space correlation coefficient with the known solution is displayed as a function of iteration. The weighted average trajectory, evaluated from all replicates, is shown with a dashed black line [each trajectory being self-weighted (Garcia, 2012) according to the value of the correlation coefficient at each iteration]. The associated violin plots (Hintze & Nelson, 1998) summarize the agreement of the individual replicates at the final iteration. (e) summarizes the overall results of the experiment, showing the violin plots as a function of the circular variance of the phase-error distributions. |