SAGA-GIS Tool Library Documentation (v7.8.2)

Tool Seed Generation

The tool allows one to create seed points from a stack of input features. Such seed points can be used, for example, as input in the 'Seeded Region Growing' tool.

Parameters

 NameTypeIdentifierDescriptionConstraints
InputFeaturesGrid list, inputFEATURES--
OutputVarianceGrid, outputVARIANCE--
Seeds Grid (*)Grid, output, optionalSEED_GRID--
Seed Points (*)Shapes, output, optionalSEED_POINTS--
OptionsGrid SystemGrid systemPARAMETERS_GRID_SYSTEM--
Seed TypeChoiceSEED_TYPE-Available Choices:
[0] minima of variance
[1] maxima of variance
Default: 0
MethodChoiceMETHOD-Available Choices:
[0] band width smoothing
[1] band width search
Default: 0
Bandwidth (Cells)Floating pointBAND_WIDTH-Minimum: 1.000000
Default: 10.000000
Normalize FeaturesBooleanNORMALIZEStandardize the input features, i.e. rescale the input data (features) such that the mean equals 0 and the standard deviation equals 1. This is helpful when the input features have different scales, units or outliers.Default: 0
Weighting FunctionChoiceDW_WEIGHTING-Available Choices:
[0] no distance weighting
[1] inverse distance to a power
[2] exponential
[3] gaussian
Default: 0
PowerFloating pointDW_IDW_POWER-Minimum: 0.000000
Default: 2.000000
BandwidthFloating pointDW_BANDWIDTHBandwidth for exponential and Gaussian weightingMinimum: 0.000000
Default: 1.000000
(*) optional

Command-line

Usage: saga_cmd imagery_segmentation 2 [-FEATURES <str>] [-VARIANCE <str>] [-SEED_GRID <str>] [-SEED_POINTS <str>] [-SEED_TYPE <str>] [-METHOD <str>] [-BAND_WIDTH <double>] [-NORMALIZE <str>] [-DW_WEIGHTING <str>] [-DW_IDW_POWER <double>] [-DW_BANDWIDTH <double>]
  -FEATURES:<str>       	Features
	Grid list, input
  -VARIANCE:<str>       	Variance
	Grid, output
  -SEED_GRID:<str>      	Seeds Grid
	Grid, output, optional
  -SEED_POINTS:<str>    	Seed Points
	Shapes, output, optional
  -SEED_TYPE:<str>      	Seed Type
	Choice
	Available Choices:
	[0] minima of variance
	[1] maxima of variance
	Default: 0
  -METHOD:<str>         	Method
	Choice
	Available Choices:
	[0] band width smoothing
	[1] band width search
	Default: 0
  -BAND_WIDTH:<double>  	Bandwidth (Cells)
	Floating point
	Minimum: 1.000000
	Default: 10.000000
  -NORMALIZE:<str>      	Normalize Features
	Boolean
	Default: 0
  -DW_WEIGHTING:<str>   	Weighting Function
	Choice
	Available Choices:
	[0] no distance weighting
	[1] inverse distance to a power
	[2] exponential
	[3] gaussian
	Default: 0
  -DW_IDW_POWER:<double>	Power
	Floating point
	Minimum: 0.000000
	Default: 2.000000
  -DW_BANDWIDTH:<double>	Bandwidth
	Floating point
	Minimum: 0.000000
	Default: 1.000000