Tool Modifed Quadratic Shepard
Modified Quadratic Shepard method for grid interpolation from irregular distributed points. This tool is based on Tool 660 in TOMS.
QSHEP2D: Fortran routines implementing the Quadratic Shepard method for bivariate interpolation of scattered data (see R. J. Renka, ACM TOMS 14 (1988) pp.149-150).
Classes: E2b. Interpolation of scattered, non-gridded multivariate data.
- Author: A.Ringeler (c) 2003
- 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 | Cross Validation Summary (*) | Table, output, optional | CV_SUMMARY | - | - |
Cross Validation Residuals (*) | Shapes, output, optional | CV_RESIDUALS | - | - |
Target Grid | Grid, output | TARGET_OUT_GRID | - | - |
Options | Attribute | Table field | FIELD | - | - |
Cross Validation | Choice | CV_METHOD | - | Available Choices: [0] none [1] leave one out [2] 2-fold [3] k-fold Default: 0 |
Cross Validation Subsamples | Integer | CV_SAMPLES | number of subsamples for k-fold cross validation | Minimum: 2 Default: 10 |
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 | - | - |
Quadratic Neighbors | Integer | QUADRATIC_NEIGHBORS | - | Minimum: 5 Default: 13 |
Weighting Neighbors | Integer | WEIGHTING_NEIGHBORS | - | Minimum: 3 Default: 19 |
(*) optional |
Command-line
Usage: saga_cmd grid_gridding 4 [-POINTS <str>] [-FIELD <str>] [-CV_METHOD <str>] [-CV_SUMMARY <str>] [-CV_RESIDUALS <str>] [-CV_SAMPLES <num>] [-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>] [-QUADRATIC_NEIGHBORS <num>] [-WEIGHTING_NEIGHBORS <num>]
-POINTS:<str> Points
Shapes, input
-FIELD:<str> Attribute
Table field
-CV_METHOD:<str> Cross Validation
Choice
Available Choices:
[0] none
[1] leave one out
[2] 2-fold
[3] k-fold
Default: 0
-CV_SUMMARY:<str> Cross Validation Summary
Table, output, optional
-CV_RESIDUALS:<str> Cross Validation Residuals
Shapes, output, optional
-CV_SAMPLES:<num> Cross Validation Subsamples
Integer
Minimum: 2
Default: 10
-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
-QUADRATIC_NEIGHBORS:<num> Quadratic Neighbors
Integer
Minimum: 5
Default: 13
-WEIGHTING_NEIGHBORS:<num> Weighting Neighbors
Integer
Minimum: 3
Default: 19