Tool GWR for Grid Downscaling
References
- Fotheringham, S.A., Brunsdon, C., Charlton, M (2002): Geographically weighted regression: the analysis of spatially varying relationships. John Wiley & Sons. http://onlinelibrary.wiley.com/doi/10.1111/j.1538-4632.2003.tb01114.x/abstract.
- Fotheringham, S.A., Charlton, M., Brunsdon, C. (1998): Geographically weighted regression: a natural evolution of the expansion method for spatial data analysis.. http://www.envplan.com/abstract.cgi?id=a301905.
- Lloyd, C. (2010): Spatial data analysis - an introduction for GIS users. Oxford, 206p.
- Author: O.Conrad (c) 2013
- Menu: Spatial and Geostatistics|Geographically Weighted Regression
Parameters
| Name | Type | Identifier | Description | Constraints | |
|---|---|---|---|---|---|
| Input | Predictors | Grid list (input) | PREDICTORS | - | - |
| Dependent Variable | Grid (input) | DEPENDENT | - | - | |
| Output | Regression | Grid (output) | REGRESSION | - | - |
| Regression with Residual Correction (*) | Grid (optional output) | REG_RESCORR | - | - | |
| Coefficient of Determination | Grid (output) | QUALITY | - | - | |
| Residuals | Grid (output) | RESIDUALS | - | - | |
| Regression Parameters (*) | Grid list (optional output) | MODEL | - | - | |
| Options | Grid system | Grid system | PARAMETERS_GRID_SYSTEM | - | - |
| Grid System | Grid system | GRID_SYSTEM | - | - | |
| Output of Model Parameters | Boolean | MODEL_OUT | - | Default: 0 | |
| Search Range | Choice | SEARCH_RANGE | - | Available Choices: [0] local [1] global Default: 0 | |
| Search Distance [Cells] | Integer | SEARCH_RADIUS | - | Minimum: 1 Default: 10 | |
| Weighting Function | Choice | DW_WEIGHTING | - | Available Choices: [0] no distance weighting [1] inverse distance to a power [2] exponential [3] gaussian weighting Default: 3 | |
| Inverse Distance Weighting Power | Floating point | DW_IDW_POWER | - | Minimum: 0.000000 Default: 1.000000 | |
| Inverse Distance Offset | Boolean | DW_IDW_OFFSET | Calculates weights for distance plus one, avoiding division by zero for zero distances | Default: 1 | |
| Gaussian and Exponential Weighting Bandwidth | Floating point | DW_BANDWIDTH | - | Minimum: 0.000000 Default: 7.000000 | |
| (*) optional | |||||
Command-line
Usage: saga_cmd statistics_regression 14 [-PREDICTORS <str>] [-REGRESSION <str>] [-REG_RESCORR <str>] [-DEPENDENT <str>] [-QUALITY <str>] [-RESIDUALS <str>] [-MODEL <str>] [-MODEL_OUT <str>] [-SEARCH_RANGE <str>] [-SEARCH_RADIUS <num>] [-DW_WEIGHTING <str>] [-DW_IDW_POWER <double>] [-DW_IDW_OFFSET <str>] [-DW_BANDWIDTH <double>] -PREDICTORS:<str> Predictors Grid list (input) -REGRESSION:<str> Regression Grid (output) -REG_RESCORR:<str> Regression with Residual Correction Grid (optional output) -DEPENDENT:<str> Dependent Variable Grid (input) -QUALITY:<str> Coefficient of Determination Grid (output) -RESIDUALS:<str> Residuals Grid (output) -MODEL:<str> Regression Parameters Grid list (optional output) -MODEL_OUT:<str> Output of Model Parameters Boolean Default: 0 -SEARCH_RANGE:<str> Search Range Choice Available Choices: [0] local [1] global Default: 0 -SEARCH_RADIUS:<num> Search Distance [Cells] Integer Minimum: 1 Default: 10 -DW_WEIGHTING:<str> Weighting Function Choice Available Choices: [0] no distance weighting [1] inverse distance to a power [2] exponential [3] gaussian weighting Default: 3 -DW_IDW_POWER:<double> Inverse Distance Weighting Power Floating point Minimum: 0.000000 Default: 1.000000 -DW_IDW_OFFSET:<str> Inverse Distance Offset Boolean Default: 1 -DW_BANDWIDTH:<double> Gaussian and Exponential Weighting Bandwidth Floating point Minimum: 0.000000 Default: 7.000000