Module Shrink and Expand
Regions with valid data in the input grid can be shrinked or expanded by a certain amount (radius). Shrinking just sets the border of regions with valid data to NoData, expanding sets NoData cells along the border of regions with valid data to a new valid value, computed by the method selected (min, max, mean, majority).
- Author: V.Wichmann & O.Conrad (c) 2011
- Specification: grid
- Menu: Grid|Gaps
Parameters
| Name | Type | Identifier | Description | Constraints | |
|---|---|---|---|---|---|
| Input | Grid | Grid (input) | INPUT | - | - |
| Output | Result Grid (*) | Grid (optional output) | RESULT | - | - |
| Options | Grid system | Grid system | PARAMETERS_GRID_SYSTEM | Grid system | - |
| Operation | Choice | OPERATION | - | Available Choices: [0] shrink [1] expand [2] shrink and expand [3] expand and shrink Default: 3 | |
| Search Mode | Choice | CIRCLE | - | Available Choices: [0] Square [1] Circle Default: 1 | |
| Radius | Integer | RADIUS | - | Minimum: 1 Default: 1 | |
| Method | Choice | EXPAND | - | Available Choices: [0] minimum [1] maximum [2] mean [3] majority Default: 3 | |
| (*) optional | |||||
Command-line
Usage: saga_cmd grid_tools 28 [-INPUT <str>] [-RESULT <str>] [-OPERATION <str>] [-CIRCLE <str>] [-RADIUS <num>] [-EXPAND <str>] -INPUT:<str> Grid Grid (input) -RESULT:<str> Result Grid Grid (optional output) -OPERATION:<str> Operation Choice Available Choices: [0] shrink [1] expand [2] shrink and expand [3] expand and shrink Default: 3 -CIRCLE:<str> Search Mode Choice Available Choices: [0] Square [1] Circle Default: 1 -RADIUS:<num> Radius Integer Minimum: 1 Default: 1 -EXPAND:<str> Method Choice Available Choices: [0] minimum [1] maximum [2] mean [3] majority Default: 3