On the effects of spatial resolution on effective distance measurement in digital landscapes

Ecological Processes

Table 3 R² (above) and p value (below) for the linear regression of each of CWL3/CWL1, CWL9/CWL1, and CWL27/CWL1 against h, dist_type, #_of_classes, min_value, max_value, and straight-line source-to-sink distance

Barrier	Accuracy indicator	h	Symmetric dist_type	Left-skewed dist_type	Right-skewed dist_type	#_of_ classes	min_ value	max_ value	Straight-line source-to-sink distance
No barriers	CWL3/CWL1	0.10775 < 0.001	0.00080 0.370	0.00140 0.237	0.00331 0.069	0.00570 0.017	0.12189 < 0.001	0.00336 0.067	0.00003 0.856
	CWL9/CWL1	0.11505 < 0.001	0.00017 0.682	0.00555 0.018	0.00674 0.009	0.00252 0.112	0.12693 < 0.001	0.00568 0.017	0.00003 0.852
	CWL27/CWL1	0.11166 < 0.001	0.00007 0.796	0.00605 0.014	0.00789 0.005	0.00358 0.059	0.13283 < 0.001	0.00436 0.037	0.00023 0.630
One barrier	CWL3/CWL1	0.11606 < 0.001	0.00060 0.439	0.00248 0.116	0.00368 0.055	0.00435 0.037	0.12608 < 0.001	0.00525 0.022	0.00003 0.869
	CWL9/CWL1	0.06294 < 0.001	0.00000 0.979	0.00722 0.007	0.01163 0.001	0.00000 0.950	0.03914 < 0.001	0.00427 0.039	0.00025 0.616
	CWL27/CWL1	0.05866 < 0.001	0.00000 0.989	0.01082 0.001	0.01819 < 0.001	0.00192 0.167	0.05427 < 0.001	0.00272 0.099	0.00006 0.807
Two barriers	CWL3/CWL1	0.09164 < 0.001	0.00019 0.663	0.00092 0.337	0.00094 0.334	0.00073 0.392	0.10157 < 0.001	0.00480 0.028	0.00000 0.990
	CWL9/CWL1	0.05893 < 0.001	0.00007 0.791	0.00079 0.375	0.00055 0.457	0.00035 0.553	0.01136 0.001	0.00230 0.130	0.00202 0.156
	CWL27/CWL1	0.04015 < 0.001	0.00000 0.991	0.00202 0.156	0.00311 0.078	0.00100 0.318	0.01877 < 0.001	0.00125 0.264	0.00054 0.462

Note that dist_type was represented by three dummy variables (symmetric, left skewed, and right skewed, each of which was used as a regressor. Note also that max_value was dependent on #_of_classes and min_value, although not completely determined by them