SAGA-GIS Module Library Documentation (v2.2.2)

Module B-Spline Approximation

Calculates B-spline functions for chosen level of detail. This module serves as the basis for the 'Multilevel B-Spline Interpolation' and is not suited as is for spatial data interpolation from scattered data.

Reference:
- Lee, S., Wolberg, G., Shin, S.Y. (1997): 'Scattered Data Interpolation with Multilevel B-Splines', IEEE Transactions On Visualisation And Computer Graphics, Vol.3, No.3

Parameters

 NameTypeIdentifierDescriptionConstraints
InputPointsShapes (input)SHAPES--
Target System (*)Grid (optional input)TARGET_TEMPLATEuse this grid's system for output grids-
OutputTarget GridGrid (output)TARGET_OUT_GRID--
OptionsAttributeTable fieldFIELD--
Target Grid SystemChoiceTARGET_DEFINITION-Available Choices:
[0] user defined
[1] grid or grid system
Default: 0
LeftFloating pointTARGET_USER_XMIN-Default: 0.000000
RightFloating pointTARGET_USER_XMAX-Default: 100.000000
BottomFloating pointTARGET_USER_YMIN-Default: 0.000000
TopFloating pointTARGET_USER_YMAX-Default: 100.000000
CellsizeFloating pointTARGET_USER_SIZE-Minimum: 0.000000
Default: 1.000000
FitChoiceTARGET_USER_FITS-Available Choices:
[0] nodes
[1] cells
Default: 0
ResolutionFloating pointLEVEL-Minimum: 0.001000
Default: 1.000000
(*) optional

Command-line

Usage: saga_cmd grid_spline 3 [-SHAPES <str>] [-FIELD <str>] [-TARGET_DEFINITION <str>] [-TARGET_USER_XMIN <str>] [-TARGET_USER_XMAX <str>] [-TARGET_USER_YMIN <str>] [-TARGET_USER_YMAX <str>] [-TARGET_USER_SIZE <str>] [-TARGET_USER_FITS <str>] [-TARGET_TEMPLATE <str>] [-TARGET_OUT_GRID <str>] [-LEVEL <str>]
  -SHAPES:<str>           	Points
	Shapes (input)
  -FIELD:<str>            	Attribute
	Table field
  -TARGET_DEFINITION:<str>	Target Grid System
	Choice
	Available Choices:
	[0] user defined
	[1] grid or grid system
	Default: 0
  -TARGET_USER_XMIN:<str> 	Left
	Floating point
	Default: 0.000000
  -TARGET_USER_XMAX:<str> 	Right
	Floating point
	Default: 100.000000
  -TARGET_USER_YMIN:<str> 	Bottom
	Floating point
	Default: 0.000000
  -TARGET_USER_YMAX:<str> 	Top
	Floating point
	Default: 100.000000
  -TARGET_USER_SIZE:<str> 	Cellsize
	Floating point
	Minimum: 0.000000
	Default: 1.000000
  -TARGET_USER_FITS:<str> 	Fit
	Choice
	Available Choices:
	[0] nodes
	[1] cells
	Default: 0
  -TARGET_TEMPLATE:<str>  	Target System
	Grid (optional input)
  -TARGET_OUT_GRID:<str>  	Target Grid
	Grid (output)
  -LEVEL:<str>            	Resolution
	Floating point
	Minimum: 0.001000
	Default: 1.000000