Tool B-Spline Approximation
Calculates B-spline functions for chosen level of detail. This tool 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
- Author: (c) 2006 by O.Conrad
- Menu: Grid|Gridding|Spline Interpolation
Parameters
| | Name | Type | Identifier | Description | Constraints |
|---|
| Input | Points | Shapes (input) | SHAPES | - | - |
| Target System (*) | Grid (optional input) | TARGET_TEMPLATE | use this grid's system for output grids | - |
| Output | Target Grid | Grid (output) | TARGET_OUT_GRID | - | - |
| Options | Attribute | Table field | FIELD | - | - |
| Target Grid System | Choice | TARGET_DEFINITION | - | Available Choices:
[0] user defined
[1] grid or grid system
Default: 0 |
| Cellsize | Floating point | TARGET_USER_SIZE | - | Minimum: 0.000000
Default: 1.000000 |
| Left | Floating point | TARGET_USER_XMIN | - | Default: 0.000000 |
| Right | Floating point | TARGET_USER_XMAX | - | Default: 100.000000 |
| Bottom | Floating point | TARGET_USER_YMIN | - | Default: 0.000000 |
| Top | Floating point | TARGET_USER_YMAX | - | Default: 100.000000 |
| Fit | Choice | TARGET_USER_FITS | - | Available Choices:
[0] nodes
[1] cells
Default: 0 |
| Grid System | Grid system | TARGET_SYSTEM | - | - |
| Resolution | Floating point | LEVEL | - | Minimum: 0.000000
Default: 1.000000 |
| (*) optional |
Command-line
Usage: saga_cmd grid_spline 3 [-SHAPES <str>] [-FIELD <str>] [-TARGET_DEFINITION <str>] [-TARGET_USER_SIZE <double>] [-TARGET_USER_XMIN <double>] [-TARGET_USER_XMAX <double>] [-TARGET_USER_YMIN <double>] [-TARGET_USER_YMAX <double>] [-TARGET_USER_FITS <str>] [-TARGET_TEMPLATE <str>] [-TARGET_OUT_GRID <str>] [-LEVEL <double>]
-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_SIZE:<double> Cellsize
Floating point
Minimum: 0.000000
Default: 1.000000
-TARGET_USER_XMIN:<double> Left
Floating point
Default: 0.000000
-TARGET_USER_XMAX:<double> Right
Floating point
Default: 100.000000
-TARGET_USER_YMIN:<double> Bottom
Floating point
Default: 0.000000
-TARGET_USER_YMAX:<double> Top
Floating point
Default: 100.000000
-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:<double> Resolution
Floating point
Minimum: 0.000000
Default: 1.000000