Close Gaps with Spline

Author: O.Conrad (c) 2010
Menu: Grid | Gaps

Description

The tool allows one to close NoData gaps in a grid by thin plate spline interpolation from cell values around the gaps.

Parameters

	Name	Type	Identifier	Description	Constraints
Input	Grid	grid, input	`GRID`	The input grid.	-
Input	Mask	grid, input, optional	`MASK`	An optional mask grid. Masked cells are not closed.	-
Output	Closed Gaps Grid	grid, output, optional	`CLOSED`	The output grid.	-
Options	Grid System	grid system	`PARAMETERS_GRID_SYSTEM`	-	-
	Maximum Gap Size	integer number	`MAXGAPCELLS`	The maximum gap size to be closed [number of cells]. Ignored if set to zero.	Minimum: 0 Default: 0
	Maximum Points	integer number	`MAXPOINTS`	The maximum number of points used for spline interpolation [-].	Minimum: 2 Default: 1000
	Number of Points for Local Interpolation	integer number	`LOCALPOINTS`	The number of nearest neighbours used for spline interpolation [-].	Minimum: 2 Default: 20
	Extended Neighbourhood	boolean	`EXTENDED`	The extended neighbourhood not only includes the immediate neighbouring cells of a gap, but also their neighbours.	Default: 0
	Neighbourhood	choice	`NEIGHBOURS`	The analysed neighbourhood, either the four cardinal neighbours or all eight neighbours.	Available Choices: [0] Neumann [1] Moore Default: 0
	Radius	integer number	`RADIUS`	The nearest neighbour search radius [map units]. If zero, simply the nearest 'Number of Points for Local Interpolation' are used.	Minimum: 0 Default: 0
	Relaxation	floating point number	`RELAXATION`	The regularization parameter controlling the amount of smoothing [-]. If the value is zero, exact interpolation is used.	Minimum: 0.000000 Default: 0.000000

Command Line


Usage: saga_cmd grid_tools 25 [-GRID ] [-MASK ] [-MAXGAPCELLS ] [-CLOSED ] [-MAXPOINTS ] [-LOCALPOINTS ] [-EXTENDED ] [-NEIGHBOURS ] [-RADIUS ] [-RELAXATION ]
  -GRID:            Grid
	grid, input
  -MASK:            Mask
	grid, input, optional
  -MAXGAPCELLS:     Maximum Gap Size
	integer number
	Minimum: 0
	Default: 0
  -CLOSED:          Closed Gaps Grid
	grid, output, optional
  -MAXPOINTS:       Maximum Points
	integer number
	Minimum: 2
	Default: 1000
  -LOCALPOINTS:     Number of Points for Local Interpolation
	integer number
	Minimum: 2
	Default: 20
  -EXTENDED:        Extended Neighbourhood
	boolean
	Default: 0
  -NEIGHBOURS:      Neighbourhood
	choice
	Available Choices:
	[0] Neumann
	[1] Moore
	Default: 0
  -RADIUS:          Radius
	integer number
	Minimum: 0
	Default: 0
  -RELAXATION:   Relaxation
	floating point number
	Minimum: 0.000000
	Default: 0.000000