Plots metrics in y_metrics list. One figure is plotted and each entry in the list is plotted in a subplot (and sorted per settings). For example: settings = ['width: 128.0', 'width: 160.0']. Sort subplot per setting. y_metrics = ['PSNR (dB)', 'PSNR (dB)']. Metric to plot per subplot.
(settings, y_metrics, x_metric, metrics, title)