Change Vector Analysis
- Author: V.Olaya (c) 2004, O.Conrad (c) 2012
- Menu: Imagery | Analysis
Description
This tool performs a change vector analysis (CVA) for the given input features. Input features are supplied as grid lists for initial and final state. In both lists features have to be given in the same order. Distance is measured as Euclidean distance in features space. When analyzing two features direction is calculated as angle (radians) by default. Otherwise direction is coded as the quadrant it points to in terms of feature space.
Parameters
| | Name | Type | Identifier | Description | Constraints |
|---|
| Input | Initial State | grid list, input | A | - | - |
| Final State | grid list, input | B | - | - |
| Output | Distance | grid, output | DIST | - | - |
| Angle | grid, output, optional | DIR | - | - |
| Change Vector | grid collection, output, optional | C | - | - |
| Options | Grid System | grid system | PARAMETERS_GRID_SYSTEM | - | - |
Command Line
Usage: saga_cmd grid_analysis 6 [-A ] [-B ] [-DIST ] [-DIR ] [-C ]
-A: Initial State
grid list, input
-B: Final State
grid list, input
-DIST: Distance
grid, output
-DIR: Angle
grid, output, optional
-C: Change Vector
grid collection, output, optional