Least-cost path

tr_least_cost_path

Ngong Hills and the Rift Valley escarpment, Kajiado, KenyaMobility2 calls
What it does

The fastest route for a mobility class through start, optional vias and end, with up to three alternates, travel time and an optional least-cost corridor.

Like Cost Distance + Optimal Path As Line / Least Cost Path (Spatial Analyst) in ArcGIS Pro and Least Cost Path plugin / GRASS r.cost + r.drain in QGIS. Run by the product's terrain engine on 30 m cells from Copernicus DEM GLO-30 (full resolution): 740 x 930 = 688,200 cells; no model was called.

Charts

Elevation along the routes
Elevation along the routes

Least-cost path along the longest axis

verified: 3 checks passed

Best dismounted route: 32.55 km in about 413 min (ascent 664 m, 1% restricted); 0 alternate(s).

Least-cost path along the longest axis
Least-cost path along the longest axis

Parameters

ParameterValue
cell_size_m30
pointsauto:axis (the entry points of the area's longest axis)
mobility_classdismounted
time_rasterno

Numbers

MeasureValue
best.length_m3.255e+04
best.time_s2.479e+04
best.time_min413.1
best.ascent_m663.5
best.descent_m555.3
best.max_slope_pct43.7
best.unrestricted_pct99.4
best.restricted_pct0.6
best.severe_pct0
best.cells943
rules.modeltobler
rules.flat_kmh5
rules.restricted_pct30
rules.severe_pct60
rules.restricted_speed_frac0.5
rules.severe_speed_frac0.2
rules.road_kmh5
rules.classdismounted
length_m3.255e+04
dem.rows740
dem.cols930
dem.cell_m30
dem.crsEPSG:32737
dem.missing_frac0
dem.elev_min_m1,562
dem.elev_max_m2,456
dem.elev_mean_m1,824
dem.relief_m894.3
dem_source.kindcopernicus
dem_source.native_res_m30.91

Notes

  • DEM: Copernicus DEM GLO-30 (open data; cached). Copernicus DEM GLO-30: produced using Copernicus WorldDEM-30 (c) DLR e.V. 2010-2014 and (c) Airbus Defence and Space GmbH 2014-2018 provided under COPERNICUS by the European Union and ESA
  • points: the entry points of the area's longest axis, 36.55010, -1.40000 and 36.79989, -1.40025
  • the grid (30 m) is finer than the DEM (30.9 m): values between DEM samples are interpolated
  • GeoBit method defaults (uncalibrated); override any value per call

Least-cost path between the two highest summits

verified: 3 checks passed

Best dismounted route: 9.35 km in about 170 min (ascent 391 m, 15% restricted); 0 alternate(s).

Least-cost path between the two highest summits
Least-cost path between the two highest summits

Parameters

ParameterValue
cell_size_m30
pointsauto:heights (the two highest summits)
mobility_classdismounted
time_rasterno

Numbers

MeasureValue
best.length_m9,352
best.time_s1.02e+04
best.time_min170
best.ascent_m390.6
best.descent_m766
best.max_slope_pct59.24
best.unrestricted_pct84.8
best.restricted_pct15.2
best.severe_pct0
best.cells256
rules.modeltobler
rules.flat_kmh5
rules.restricted_pct30
rules.severe_pct60
rules.restricted_speed_frac0.5
rules.severe_speed_frac0.2
rules.road_kmh5
rules.classdismounted
length_m9,352
dem.rows740
dem.cols930
dem.cell_m30
dem.crsEPSG:32737
dem.missing_frac0
dem.elev_min_m1,562
dem.elev_max_m2,456
dem.elev_mean_m1,824
dem.relief_m894.3
dem_source.kindcopernicus
dem_source.native_res_m30.91

Notes

  • DEM: Copernicus DEM GLO-30 (open data; cached). Copernicus DEM GLO-30: produced using Copernicus WorldDEM-30 (c) DLR e.V. 2010-2014 and (c) Airbus Defence and Space GmbH 2014-2018 provided under COPERNICUS by the European Union and ESA
  • points: between DH-1 (2,456 m) and DH-2 (2,080 m)
  • the grid (30 m) is finer than the DEM (30.9 m): values between DEM samples are interpolated
  • GeoBit method defaults (uncalibrated); override any value per call

Layers

Files

LayerMade byKindFeaturesFile
Terrain axis: Least-cost routestr_least_cost_pathlinestrings1GeoJSON 2 KB
Terrain summits: Least-cost routestr_least_cost_pathlinestrings1GeoJSON 1 KB