Tool Multi-Band Variation
Calculates for each cell the spectral variation based on feature space distances to the centroid for all cells in specified neighbourhood. The average distance has been used for Spectral Variation Hypothesis (SVH).
References
- Palmer, M.W., Earls, P., Hoagland, B.W., White, P.S., Wohlgemuth, T. (2002): Quantitative tools for perfecting species lists. Environmetrics 13, 121–137.
- Author: O.Conrad (c) 2010
- Menu: Spatial and Geostatistics|Grids
Parameters
| | Name | Type | Identifier | Description | Constraints |
|---|
| Input | Bands | Grid list, input | BANDS | - | - |
| Output | Mean Distance | Grid, output | MEAN | - | - |
| Standard Deviation | Grid, output | STDDEV | - | - |
| Distance | Grid, output | DIFF | - | - |
| Options | Grid System | Grid system | PARAMETERS_GRID_SYSTEM | - | - |
| Radius [Cells] | Integer | RADIUS | - | Minimum: 1
Default: 1 |
| Weighting Function | Choice | DW_WEIGHTING | - | Available Choices:
[0] no distance weighting
[1] inverse distance to a power
[2] exponential
[3] gaussian
Default: 0 |
| Power | Floating point | DW_IDW_POWER | - | Minimum: 0.000000
Default: 2.000000 |
| Bandwidth | Floating point | DW_BANDWIDTH | Bandwidth for exponential and Gaussian weighting | Minimum: 0.000000
Default: 1.000000 |
Command-line
Usage: saga_cmd statistics_grid 9 [-BANDS <str>] [-MEAN <str>] [-STDDEV <str>] [-DIFF <str>] [-RADIUS <num>] [-DW_WEIGHTING <str>] [-DW_IDW_POWER <double>] [-DW_BANDWIDTH <double>]
-BANDS:<str> Bands
Grid list, input
-MEAN:<str> Mean Distance
Grid, output
-STDDEV:<str> Standard Deviation
Grid, output
-DIFF:<str> Distance
Grid, output
-RADIUS:<num> Radius [Cells]
Integer
Minimum: 1
Default: 1
-DW_WEIGHTING:<str> Weighting Function
Choice
Available Choices:
[0] no distance weighting
[1] inverse distance to a power
[2] exponential
[3] gaussian
Default: 0
-DW_IDW_POWER:<double> Power
Floating point
Minimum: 0.000000
Default: 2.000000
-DW_BANDWIDTH:<double> Bandwidth
Floating point
Minimum: 0.000000
Default: 1.000000