Tool Gaussian Filter

The Gaussian filter is a low-pass filter operator that is used to 'blur' or 'soften' data and to remove detail and noise.
The degree of smoothing is determined by the kernel size specified as radius and the weighting of each raster cell within the kernel. The weighting scheme uses the Gaussian bell curve function and can be adjusted to the kernel size with the 'Standard Deviation' option.

Author: O.Conrad (c) 2008
Menu: Grid|Filter
WIKI: http://sourceforge.net/apps/trac/saga-gis/wiki/grid_filter_1

Parameters

	Name	Type	Identifier	Description	Constraints
Input	Grid	Grid, input	`INPUT`	-	-
Output	Filtered Grid (*)	Grid, output, optional	`RESULT`	-	-
Options	Grid System	Grid system	`PARAMETERS_GRID_SYSTEM`	-	-
	Kernel Radius	Integer	`KERNEL_RADIUS`	-	Minimum: 1 Default: 2
	Standard Deviation	Floating point	`SIGMA`	The standard deviation as percentage of the kernel radius.	Minimum: 1.000000 Default: 50.000000
(*) optional

Command-line

Usage: saga_cmd grid_filter 1 [-INPUT <str>] [-RESULT <str>] [-KERNEL_RADIUS <num>] [-SIGMA <double>]
  -INPUT:<str>        	Grid
	Grid, input
  -RESULT:<str>       	Filtered Grid
	Grid, output, optional
  -KERNEL_RADIUS:<num>	Kernel Radius
	Integer
	Minimum: 1
	Default: 2
  -SIGMA:<double>     	Standard Deviation
	Floating point
	Minimum: 1.000000
	Default: 50.000000