Tool Natural Neighbour
Natural Neighbour method for grid interpolation from irregular distributed points. This tool makes use of the 'nn - Natural Neighbours interpolation library' created and maintained by Pavel Sakov, CSIRO Marine Research. Find more information about this library at:
github.com/sakov/nn-c.
- Author: O.Conrad (c) 2008
- Menu: Grid|Gridding|Interpolation
Parameters
| Name | Type | Identifier | Description | Constraints |
Input | Points | Shapes, input | POINTS | - | - |
Target System (*) | Grid, input, optional, CMD | 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 |
West | Floating point | TARGET_USER_XMIN | - | Default: 0.000000 |
East | Floating point | TARGET_USER_XMAX | - | Default: 100.000000 |
South | Floating point | TARGET_USER_YMIN | - | Default: 0.000000 |
North | Floating point | TARGET_USER_YMAX | - | Default: 100.000000 |
Columns | Integer | TARGET_USER_COLS | Number of cells in East-West direction. | Minimum: 1 Default: 100 |
Rows | Integer | TARGET_USER_ROWS | Number of cells in North-South direction. | Minimum: 1 Default: 100 |
Fit | Choice | TARGET_USER_FITS | - | Available Choices: [0] nodes [1] cells Default: 0 |
Grid System | Grid system | TARGET_SYSTEM | - | - |
Method | Choice | METHOD | - | Available Choices: [0] Linear [1] Sibson [2] Non-Sibsonian Default: 1 |
Minimum Weight | Floating point | WEIGHT | restricts extrapolation by assigning minimal allowed weight for a vertex (normally "-1" or so; lower values correspond to lower reliability; "0" means no extrapolation) | Maximum: 0.000000 Default: 0.000000 |
(*) optional |
Command-line
Usage: saga_cmd grid_gridding 3 [-POINTS <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_COLS <num>] [-TARGET_USER_ROWS <num>] [-TARGET_USER_FITS <str>] [-TARGET_TEMPLATE <str>] [-TARGET_OUT_GRID <str>] [-METHOD <str>] [-WEIGHT <double>]
-POINTS:<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> West
Floating point
Default: 0.000000
-TARGET_USER_XMAX:<double> East
Floating point
Default: 100.000000
-TARGET_USER_YMIN:<double> South
Floating point
Default: 0.000000
-TARGET_USER_YMAX:<double> North
Floating point
Default: 100.000000
-TARGET_USER_COLS:<num> Columns
Integer
Minimum: 1
Default: 100
-TARGET_USER_ROWS:<num> Rows
Integer
Minimum: 1
Default: 100
-TARGET_USER_FITS:<str> Fit
Choice
Available Choices:
[0] nodes
[1] cells
Default: 0
-TARGET_TEMPLATE:<str> Target System
Grid, input, optional, CMD
-TARGET_OUT_GRID:<str> Target Grid
Grid, output
-METHOD:<str> Method
Choice
Available Choices:
[0] Linear
[1] Sibson
[2] Non-Sibsonian
Default: 1
-WEIGHT:<double> Minimum Weight
Floating point
Maximum: 0.000000
Default: 0.000000