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Table 1 Frequency ratio value for each landslide causal factors

From: Performance of frequency ratio and logistic regression model in creating GIS based landslides susceptibility map at Lompobattang Mountain, Indonesia

Factor Number of landslide % landslide (x) Number of pixel in class % class (y) Fr (x/y)
Topography
 Slope Class in Degree
  0–5 64 2.05 27,459 7.03 0.29
  5–10 136 4.36 67,750 17.33 0.25
  10–20 472 15.14 137,617 35.21 0.43
  20–30 609 19.54 86,336 22.09 0.88
  30–40 840 26.95 45,954 11.76 2.29
  40–50 734 23.55 19,573 5.01 4.70
  > 50 262 8.41 6141 1.57 5.35
 Curvature Class
  Concave 1616 51.84 192,998 49.38 1.05
  Flat 15 0.48 5424 1.39 0.35
  Convex 1486 47.67 192,408 49.23 0.97
 Aspect Class
  Flat (−1) 5 0.16 1933 0.49 0.32
  North (0–22.5) 159 5.10 22,786 5.83 0.87
  North East (22.5–67.5) 353 11.32 53,942 13.80 0.82
  East (67.5–112.5) 207 6.64 57,312 14.66 0.45
  South East (112.5–157.5) 242 7.76 65,237 16.69 0.47
  South (157.5–202.5) 540 17.32 56,441 14.44 1.20
  South West (2025–247.5) 834 26.76 46,535 11.91 2.25
  West (247.5–292.5) 372 11.93 30,493 7.80 1.53
  North West (292.5–337.5) 231 7.41 35,952 9.20 0.81
  North (337.5–360) 174 5.58 20,199 5.17 1.08
Geology
 Lithology Class
  Tmcv (Volcanics of camba formation) 5 0.16 28,534 7.30 0.02
  Qlvb (Quarter lompbattang volcanics breccia) 13 0.42 17,403 4.45 0.09
  Qlv (Quarter lompbattang volcanics) 3080 98.81 332,091 84.97 1.16
  Qlvp (Quarter lompbattang volcanics parasitic) - - 8643 2.21 -
  Qlvc (Quarter lompbattang volcanics center ) 19 0.61 4159 1.06 0.57
 Distance From fault (m)
  0–500 886 28.42 34,527 8.83 3.22
  500–1000 952 30.54 35,187 9.00 3.39
  1000–1500 296 9.50 35,483 9.08 1.05
  1500–2000 177 5.68 27,949 7.15 0.79
  200–3000 411 13.19 50,855 13.01 1.01
  3000–4000 263 8.44 47,642 12.19 0.69
  4000–6000 63 2.02 81,203 20.78 0.10
  6000–8000 69 2.21 53,027 13.57 0.16
  8000–10,000 - - 21,147 5.41 -
  10,000–12,000 - - 3810 0.97 -
Proximity
 Distance from Road (m)
  0–500 114 3.66 155,239 39.72 0.09
  500–750 84 2.69 32,697 8.37 0.32
  750–1000 70 2.25 24,331 6.23 0.36
  1000–2000 463 14.85 63,341 16.21 0.92
  2000–3000 488 15.66 36,745 9.40 1.67
  3000–4000 331 10.62 31,195 7.98 1.33
  > 4000 1567 50.27 47,282 12.10 4.16
 Distance from River (m)
  0–50 213 6.83 58,994 15.09 0.45
  50–100 220 7.06 56,989 14.58 0.48
  100–150 227 7.28 51,007 13.05 0.56
  150–200 285 9.14 44,044 11.27 0.81
  200–250 293 9.40 37,016 9.47 0.99
  250–300 291 9.34 30,154 7.72 1.21
  > 300 1588 50.95 112,626 28.82 1.77
Landuse
 Landuse Class
  Primary Dry Forest 994 31.89 99,453 25.45 1.25
  Secondary Dry Forest 757 24.29 46,591 11.92 2.04
  Bushes 977 31.34 83,215 21.29 1.47
  Mix Dryland Agriculture 382 12.26 133,251 34.09 0.36
  Forest Plant - - 3962 1.01 -
  Open Land - - 1601 0.41 -
  Grass Land 7 0.22 1112 0.28 0.79
  Paddy Field - - 1533 5.00 -
  Dryland Agriculture - - 2112 0.54 -