Module Cluster Analysis for Grids
Cluster Analysis for grids.
References:
Iterative Minimum Distance:
- Forgy, E. (1965):
'Cluster Analysis of multivariate data: efficiency vs. interpretability of classifications',
Biometrics 21:768
Hill-Climbing:- Rubin, J. (1967):
'Optimal Classification into Groups: An Approach for Solving the Taxonomy Problem',
J. Theoretical Biology, 15:103-144
- Author: O.Conrad (c) 2001
- Specification: grid
- Menu: Imagery|Classification
Parameters
| Name | Type | Identifier | Description | Constraints | |
|---|---|---|---|---|---|
| Input | Grids | Grid list (input) | GRIDS | - | - |
| Output | Clusters | Grid (output) | CLUSTER | - | - |
| Statistics | Table (output) | STATISTICS | - | - | |
| Options | Method | Choice | METHOD | - | Available Choices: [0] Iterative Minimum Distance (Forgy 1965) [1] Hill-Climbing (Rubin 1967) [2] Combined Minimum Distance / Hillclimbing Default: 1 |
| Clusters | Integer | NCLUSTER | Number of clusters | Minimum: 2 Default: 10 | |
| Maximum Iterations | Integer | MAXITER | maximum number of iterations, ignored if set to zero (default) | Minimum: 0 Default: 0 | |
| Normalise | Boolean | NORMALISE | Automatically normalise grids by standard deviation before clustering. | Default: 0 | |
| Old Version | Boolean | OLDVERSION | slower but memory saving | Default: 0 | |
| Update View | Boolean | UPDATEVIEW | - | Default: 1 |
Command-line
Usage: saga_cmd imagery_classification 1 -GRIDS <str> [-CLUSTER <str>] [-STATISTICS <str>] [-METHOD <str>] [-NCLUSTER <num>] [-MAXITER <num>] [-NORMALISE <str>] [-OLDVERSION <str>] [-UPDATEVIEW <str>] -GRIDS:<str> Grids Grid list (input) -CLUSTER:<str> Clusters Grid (output) -STATISTICS:<str> Statistics Table (output) -METHOD:<str> Method Choice Available Choices: [0] Iterative Minimum Distance (Forgy 1965) [1] Hill-Climbing (Rubin 1967) [2] Combined Minimum Distance / Hillclimbing Default: 1 -NCLUSTER:<num> Clusters Integer Minimum: 2 Default: 10 -MAXITER:<num> Maximum Iterations Integer Minimum: 0 Default: 0 -NORMALISE:<str> Normalise Boolean Default: 0 -OLDVERSION:<str> Old Version Boolean Default: 0 -UPDATEVIEW:<str> Update View Boolean Default: 1