Table 2.

Cell-by-cell Pearson’s correlation between pairs of maps.

Scaling	Water resistance		High contrast				Low contrast
			High		Low		High		Low
		H index	HF	HU	HF	HU	HF	HU	HF	HU
High contrast	High	HF	1.00	0.79	0.73	0.58	0.83	0.85	0.64	0.67
		HU	0.79	1.00	0.41	0.54	0.56	0.65	0.34	0.43
	Low	HF	0.73	0.41	1.00	0.78	0.78	0.77	0.91	0.91
		HU	0.58	0.54	0.78	1.00	0.57	0.64	0.66	0.75
Low contrast	High	HF	0.83	0.56	0.78	0.57	1.00	0.94	0.85	0.82
		HU	0.85	0.65	0.77	0.64	0.94	1.00	0.78	0.85
	Low	HF	0.64	0.34	0.91	0.66	0.85	0.78	1.00	0.94
		HU	0.67	0.43	0.91	0.75	0.82	0.85	0.94	1.00

The eight maps represent all eight combinations of three factors: scaling function (high or low contrast), water resistance (high or low), and H index (H_F and H_U). Boxes delineate comparisons using the same scaling function. Bold values denote comparisons between maps that only differ in their H index; italic values are comparisons between maps that only differ in their degree of water resistance. (Note: full symmetric matrix is provided for ease of reference).