SAGA-GIS Module Library Documentation (v2.3.0)

Module Resampling Filter

Resampling filter for grids. Resamples in a first step the given grid to desired resampling cell size, expressed as multiple of the original cell size (scale factor). This is an up-scaling through which cell values are aggregated as cell area weighted means. Second step is the down-scaling to original cell size using spline interpolation. Specially for larger search distances this is a comparably fast alternative for simple low and high pass filter operations.

Parameters

 NameTypeIdentifierDescriptionConstraints
InputGridGrid (input)GRID--
OutputLow Pass FilterGrid (output)LOPASS--
High Pass FilterGrid (output)HIPASS--
OptionsGrid systemGrid systemPARAMETERS_GRID_SYSTEMGrid system-
Scale FactorFloating pointSCALE-Minimum: 1.000000
Default: 10.000000

Command-line

Usage: saga_cmd grid_filter 11 [-GRID <str>] [-LOPASS <str>] [-HIPASS <str>] [-SCALE <double>]
  -GRID:<str>    	Grid
	Grid (input)
  -LOPASS:<str>  	Low Pass Filter
	Grid (output)
  -HIPASS:<str>  	High Pass Filter
	Grid (output)
  -SCALE:<double>	Scale Factor
	Floating point
	Minimum: 1.000000
	Default: 10.000000