Soil Texture Classification for Tables

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

USDA NRCS Soils Website

Parameters

	Name	Type	Identifier	Description	Constraints
Input	Table	table, input	`TABLE`	-	-
Output	Scheme as Polygons	shapes, output, optional	`POLYGONS`	-	-
Options	Sand	table field	`SAND`	sand content given as percentage	-
	Silt	table field	`SILT`	silt content given as percentage	-
	Clay	table field	`CLAY`	clay content given as percentage	-
	Texture	table field	`TEXTURE`	soil texture	-
	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 20 [-TABLE ] [-SAND ] [-SILT ] [-CLAY ] [-TEXTURE ] [-SCHEME ] [-COLORS ] [-USER ] [-POLYGONS ] [-XY_AXES ] [-TRIANGLE ]
  -TABLE:   	Table
	table, input
  -SAND:    	Sand
	table field
  -SILT:    	Silt
	table field
  -CLAY:    	Clay
	table field
  -TEXTURE: 	Texture
	table field
  -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