Soil Texture Classification
- Author: Gianluca Massei (c) 2007 (g_massa@libero.it), L.Landschreiber, O.Conrad (c) 2017
- Menu: Grid | Analysis | Soil Analysis
Description
Derive soil texture classes from sand, silt and clay contents. Currently supported schemes are USDA and German Kartieranleitung 5.
References
Parameters
| | Name | Type | Identifier | Description | Constraints |
|---|
| Input | Sand | grid, input, optional | SAND | sand content given as percentage | - |
| Silt | grid, input, optional | SILT | silt content given as percentage | - |
| Clay | grid, input, optional | CLAY | clay content given as percentage | - |
| Output | Soil Texture | grid, output | TEXTURE | soil texture | - |
| Sum | grid, output, optional | SUM | Sum of percentages | - |
| Scheme as Polygons | shapes, output, optional | POLYGONS | - | - |
| Options | Grid System | grid system | PARAMETERS_GRID_SYSTEM | - | - |
| Classification | choice | SCHEME | - | Available Choices:
[0] USDA
[1] Germany KA5
[2] Belgium/France
[3] user defined
Default: 0 |
| Default Colour Scheme | choice | COLORS | - | Available Choices:
[0] Scheme 1
[1] Scheme 2
[2] Scheme 3
Default: 0 |
| User Definition | static table | USER | The colour is defined as comma separated red, green and blue values (in the range 0 to 255). If the colour field is empty it will be generated from the chosen default colour scheme. Key and name are simple text labels specifying each class. The polygon is defined as pairs of sand (=x) and clay (=y) separated by a blank and separated from the next pair by a comma. | 4 Fields:
- 1. [string] COLOR
- 2. [string] KEY
- 3. [string] NAME
- 4. [string] POLYGON
|
| X/Y Axes | choice | XY_AXES | - | Available Choices:
[0] Sand and Clay
[1] Sand and Silt
[2] Silt and Sand
[3] Silt and Clay
[4] Clay and Sand
[5] Clay and Silt
Default: 3 |
| Triangle | choice | TRIANGLE | - | Available Choices:
[0] right-angled
[1] isosceles
Default: 1 |
Command Line
Usage: saga_cmd grid_analysis 14 [-SAND ] [-SILT ] [-CLAY ] [-TEXTURE ] [-SUM ] [-SCHEME ] [-COLORS ] [-USER ] [-POLYGONS ] [-XY_AXES ] [-TRIANGLE ]
-SAND: Sand
grid, input, optional
-SILT: Silt
grid, input, optional
-CLAY: Clay
grid, input, optional
-TEXTURE: Soil Texture
grid, output
-SUM: Sum
grid, output, optional
-SCHEME: Classification
choice
Available Choices:
[0] USDA
[1] Germany KA5
[2] Belgium/France
[3] user defined
Default: 0
-COLORS: Default Colour Scheme
choice
Available Choices:
[0] Scheme 1
[1] Scheme 2
[2] Scheme 3
Default: 0
-USER: User Definition
static table
4 Fields:
- 1. [string] COLOR
- 2. [string] KEY
- 3. [string] NAME
- 4. [string] POLYGON
-POLYGONS: Scheme as Polygons
shapes, output, optional
-XY_AXES: X/Y Axes
choice
Available Choices:
[0] Sand and Clay
[1] Sand and Silt
[2] Silt and Sand
[3] Silt and Clay
[4] Clay and Sand
[5] Clay and Silt
Default: 3
-TRIANGLE: Triangle
choice
Available Choices:
[0] right-angled
[1] isosceles
Default: 1