Extended Data Fig. 4: Global Flood Database accuracy metrics.
From: Satellite imaging reveals increased proportion of population exposed to floods
a, Sensitivity plot of accuracy metrics with random sampling of 500 points for 10 flood events. b, Error analysis showing the distribution of true positive (tp), true negative (tn), false positive (fp) and false negative (fn) rates for each of the four water detection methods, where the centre line represents the median, the hinges represent the 25th and 75th percentiles, the upper whisker extends from the hinge to the largest value no further than 1.5*IQR (interquartile range) and the lower whiskers extends from the hinge to the smallest value no further than 1.5*IQR, and the dots show outlier points outside the whisker range. c, Accuracy statistics, given as the mean and standard deviation (s.d), summarized for each thresholding method and image composite choice (metrics per event in Supplementary Table 2).