A Comparative Study of Landslide Susceptibility Mapping Using SVM and PSO-SVM Models Based on Grid and Slope Units

Table 3

Landslide conditioning factors correlation.

Factors	Alt	Slo	Asp	Pla	Pro	SPI	TPI	TRI	Lit	Fau	TWI	Riv	NDVI	Roa	Lan	Rai
ALT	1
SLO	0.138	1
ASP	‒0.006	‒0.098	1
PLA	0.007	‒0.009	‒0.028	1
PRO	‒0.184	‒0.057	‒0.008	‒0.460	1
SPI	0.066	0.065	‒0.116	‒0.001	‒0.045	1
TPI	0.169	0.078	‒0.002	0.799	‒0.819	0.073	1
TRI	0.117	0.985	‒0.099	‒0.004	‒0.065	0.044	0.086	1
LIT	0.050	‒0.071	0.044	‒0.018	‒0.058	0.013	0.010	‒0.076	1
FAU	0.131	0.063	0.158	‒0.013	‒0.047	‒0.121	0.080	0.068	‒0.213	1
TWI	0.088	0.025	0.111	‒0.003	0.019	‒0.613	‒0.019	0.035	‒0.046	0.094	1
RIV	0.217	‒0.040	0.002	0.102	‒0.007	0.008	0.061	‒0.040	0.021	‒0.014	0.014	1
NDVI	0.006	0.343	-0.246	0.156	‒0.149	0.140	0.210	0.332	‒0.057	0.090	‒0.091	0.018	1
ROA	0.270	0.029	0.079	0.037	0.062	‒0.045	‒0.035	0.021	‒0.234	‒0.411	0.062	0.432	0.030	1
LAN	0.277	0.328	0.016	0.171	‒0.164	0.102	0.188	0.320	‒0.066	0.020	0.009	0.026	0.417	0.069	1
RAI	‒0.163	‒0.016	0.031	‒0.075	0.128	‒0.029	‒0.105	‒0.011	‒0.119	‒0.113	0.002	‒0.031	‒0.069	0.075	‒0.110	1