Extended Data, Fig. 4. Illustration of the TC – EI graph.
Combinations of point TC and EI characterize different landscape configurations, and some combinations are impossible by design (grey areas). The x - axis represents the percentage of tree cover at the scale of a pixel. The y - axis represents the EI metric, computed from the regional standard deviation of TC (a measure of regional heterogeneity), and the regional average TC subtracted to point TC (a measure of point heterogeneity and direction).