Tool Mirror Grid
Mirror a grid at its center axes', either vertically, horizontally or both. If the target is not set, the changes will be stored to the original grid. 
- Author: O.Conrad (c) 2016
 
- Menu: Grid|Tools
 
Parameters
|   | Name | Type | Identifier | Description | Constraints | 
| Input | Grid | Grid, input | GRID | - | - | 
| Output | Mirror Grid (*) | Grid, output, optional | MIRROR | - | - | 
| Options | Grid System | Grid system | PARAMETERS_GRID_SYSTEM | - | - | 
 | Method | Choice | METHOD | - | Available Choices: [0] horizontally [1] vertically [2] both Default: 0 | 
| (*) optional | 
Command-line
Usage: saga_cmd grid_tools 35 [-GRID <str>] [-MIRROR <str>] [-METHOD <str>]
  -GRID:<str>  	Grid
	Grid, input
  -MIRROR:<str>	Mirror Grid
	Grid, output, optional
  -METHOD:<str>	Method
	Choice
	Available Choices:
	[0] horizontally
	[1] vertically
	[2] both
	Default: 0