Tool RGB Composite
Create red-green-blue overlays of grids. 
- Author: O.Conrad (c) 2002
 
- Menu: Visualization|Grid
 
Parameters
|   | Name | Type | Identifier | Description | Constraints | 
| Input | Red | Grid, input | R_GRID | - | - | 
 | Green | Grid, input | G_GRID | - | - | 
 | Blue | Grid, input | B_GRID | - | - | 
 | Alpha (*) | Grid, input, optional | A_GRID | - | - | 
| Output | Composite | Grid, output | RGB | - | - | 
| Options | Grid System | Grid system | PARAMETERS_GRID_SYSTEM | - | - | 
 | Value Preparation | Choice | METHOD | - | Available Choices: [0] take original value (0 - 255) [1] rescale to 0 - 255 [2] user defined [3] percentiles [4] standard deviation Default: 0 | 
 | Rescale Range | Value range | RANGE | - | - | 
 | Percentiles | Value range | PERCTL | - | - | 
 | Standard Deviation | Floating point | STDDEV | - | Minimum: 0.000000 Default: 2.000000 | 
 | Ignore No Data Cells | Boolean | NODATA | - | Default: 1 | 
| (*) optional | 
Command-line
Usage: saga_cmd grid_visualisation 3 [-R_GRID <str>] [-G_GRID <str>] [-B_GRID <str>] [-A_GRID <str>] [-RGB <str>] [-METHOD <str>] [-RANGE_MIN <double>] [-RANGE_MAX <double>] [-PERCTL_MIN <double>] [-PERCTL_MAX <double>] [-STDDEV <double>] [-NODATA <str>]
  -R_GRID:<str>       	Red
	Grid, input
  -G_GRID:<str>       	Green
	Grid, input
  -B_GRID:<str>       	Blue
	Grid, input
  -A_GRID:<str>       	Alpha
	Grid, input, optional
  -RGB:<str>          	Composite
	Grid, output
  -METHOD:<str>       	Value Preparation
	Choice
	Available Choices:
	[0] take original value (0 - 255)
	[1] rescale to 0 - 255
	[2] user defined
	[3] percentiles
	[4] standard deviation
	Default: 0
  -RANGE_MIN:<double> 	Rescale Range
	Value range
  -RANGE_MAX:<double> 	Rescale Range
	Value range
  -PERCTL_MIN:<double>	Percentiles
	Value range
  -PERCTL_MAX:<double>	Percentiles
	Value range
  -STDDEV:<double>    	Standard Deviation
	Floating point
	Minimum: 0.000000
	Default: 2.000000
  -NODATA:<str>       	Ignore No Data Cells
	Boolean
	Default: 1