SAGA-GIS Module Library Documentation (v2.1.3)

Module Multiple Regression Analysis (Grid/Grids)

Linear regression analysis of one grid as dependent and multiple grids as indepentent (predictor) variables. Details of the regression/correlation analysis will be saved to a table. Optionally the regression model is used to create a new grid with regression based values. The multiple regression analysis uses a forward selection procedure.

Reference:
- Bahrenberg, G., Giese, E., Nipper, J. (1992): 'Statistische Methoden in der Geographie 2 - Multivariate Statistik', Stuttgart, 415p.

Parameters

 NameTypeIdentifierDescriptionConstraints
InputDependentGrid (input)DEPENDENT--
GridsGrid list (input)GRIDS--
OutputRegressionGrid (output)REGRESSION--
Residuals (*)Grid (optional output)RESIDUALS--
Details: Coefficients (*)Table (optional output)INFO_COEFF--
Details: Model (*)Table (optional output)INFO_MODEL--
Details: Steps (*)Table (optional output)INFO_STEPS--
OptionsGrid InterpolationChoiceINTERPOL-Available Choices:
[0] Nearest Neighbor
[1] Bilinear Interpolation
[2] Inverse Distance Interpolation
[3] Bicubic Spline Interpolation
[4] B-Spline Interpolation
Default: 4
Include X CoordinateBooleanCOORD_X-Default: 0
Include Y CoordinateBooleanCOORD_Y-Default: 0
MethodChoiceMETHOD-Available Choices:
[0] include all
[1] forward
[2] backward
[3] stepwise
Default: 3
P inFloating pointP_INLevel of significance for automated predictor selection, given as percentageMinimum: 0.000000
Maximum: 100.000000
Default: 5.000000
P outFloating pointP_OUTLevel of significance for automated predictor selection, given as percentageMinimum: 0.000000
Maximum: 100.000000
Default: 5.000000
(*) optional

Command-line

Usage: saga_cmd statistics_regression 8 -DEPENDENT <str> -GRIDS <str> [-REGRESSION <str>] [-RESIDUALS <str>] [-INFO_COEFF <str>] [-INFO_MODEL <str>] [-INFO_STEPS <str>] [-INTERPOL <str>] [-COORD_X <str>] [-COORD_Y <str>] [-METHOD <str>] [-P_IN <str>] [-P_OUT <str>]
  -DEPENDENT:<str> 	Dependent
	Grid (input)
  -GRIDS:<str>     	Grids
	Grid list (input)
  -REGRESSION:<str>	Regression
	Grid (output)
  -RESIDUALS:<str> 	Residuals
	Grid (optional output)
  -INFO_COEFF:<str>	Details: Coefficients
	Table (optional output)
  -INFO_MODEL:<str>	Details: Model
	Table (optional output)
  -INFO_STEPS:<str>	Details: Steps
	Table (optional output)
  -INTERPOL:<str>  	Grid Interpolation
	Choice
	Available Choices:
	[0] Nearest Neighbor
	[1] Bilinear Interpolation
	[2] Inverse Distance Interpolation
	[3] Bicubic Spline Interpolation
	[4] B-Spline Interpolation
	Default: 4
  -COORD_X:<str>   	Include X Coordinate
	Boolean
	Default: 0
  -COORD_Y:<str>   	Include Y Coordinate
	Boolean
	Default: 0
  -METHOD:<str>    	Method
	Choice
	Available Choices:
	[0] include all
	[1] forward
	[2] backward
	[3] stepwise
	Default: 3
  -P_IN:<str>      	P in
	Floating point
	Minimum: 0.000000
	Maximum: 100.000000
	Default: 5.000000
  -P_OUT:<str>     	P out
	Floating point
	Minimum: 0.000000
	Maximum: 100.000000
	Default: 5.000000