SAGA-GIS Tool Library Documentation (v6.1.0)

Tool Isochrones Variable Speed (interactive)

Calculation of isochrones with variable speed.
In case a cell in an optional input grid is NoData, the corresponding parameter value will be used instead of skipping this cell.


References


Parameters

 NameTypeIdentifierDescriptionConstraints
InputElevationGrid (input)DEM--
SlopeGrid (input)SLOPE--
Catchment AreaGrid (input)FLOWACC--
Curve Number (*)Grid (optional input)CN--
Manning's N (*)Grid (optional input)MANNING--
OutputTime Out(h)Grid (output)TIME--
Speed (m/s)Grid (output)SPEED--
OptionsGrid systemGrid systemPARAMETERS_GRID_SYSTEM--
Avg. Manning's NFloating pointAVGMANNING-Default: 0.150000
Avg. Curve NumberFloating pointAVGCN-Default: 75.000000
Mixed Flow Threshold (ha)Floating pointTHRSMIXED-Default: 18.000000
Channel Definition Threshold (ha)Floating pointTHRSCHANNEL-Default: 360.000000
Avg. Rainfall Intensity (mm/h)Floating pointAVGRAINFALL-Default: 1.000000
Channel side slope(m/m)Floating pointCHANSLOPE-Default: 0.500000
Min. Flow Speed (m/s)Floating pointMINSPEED-Default: 0.050000
(*) optional

Command-line

this interactive tool can not be executed.