Confusion Matrix (Polygons / Grid)

Author: O.Conrad (c) 2015
Menu: Imagery | Classification

Description

Compares a classified polygons layer with grid classes and creates a confusion matrix and derived coefficients. Grid classes have to be defined with a look-up table and values must match those of the polygon classes for the subsequent comparison. This tool is typically used for a quality assessment of a supervised classification.

Parameters

	Name	Type	Identifier	Description	Constraints
Input	Classification	grid, input	`GRID`	-	-
	Look-up Table	table, input, optional	`GRID_LUT`	-	-
	Polygons	shapes, input	`POLYGONS`	-	-
Output	Confusion Matrix	table, output	`CONFUSION`	-	-
	Class Values	table, output	`CLASSES`	-	-
	Summary	table, output	`SUMMARY`	-	-
Options	Grid System	grid system	`PARAMETERS_GRID_SYSTEM`	-	-
	Value Interpretation	choice	`GRID_VALUES`	-	Available Choices: [0] values are class identifiers [1] use look-up table Default: 1
	Value	table field	`GRID_LUT_MIN`	-	-
	Value (Maximum)	table field	`GRID_LUT_MAX`	-	-
	Name	table field	`GRID_LUT_NAM`	-	-
	Classes	table field	`FIELD`	-	-
	Unclassified	boolean	`NO_CLASS`	-	Default: 1

Command Line

Usage: saga_cmd imagery_classification 6 [-GRID ] [-GRID_VALUES ] [-GRID_LUT ] [-GRID_LUT_MIN ] [-GRID_LUT_MAX ] [-GRID_LUT_NAM ] [-POLYGONS ] [-FIELD ] [-CONFUSION ] [-CLASSES ] [-SUMMARY ] [-NO_CLASS ]
  -GRID:        	Classification
	grid, input
  -GRID_VALUES: 	Value Interpretation
	choice
	Available Choices:
	[0] values are class identifiers
	[1] use look-up table
	Default: 1
  -GRID_LUT:    	Look-up Table
	table, input, optional
  -GRID_LUT_MIN:	Value
	table field
  -GRID_LUT_MAX:	Value (Maximum)
	table field
  -GRID_LUT_NAM:	Name
	table field
  -POLYGONS:    	Polygons
	shapes, input
  -FIELD:       	Classes
	table field
  -CONFUSION:   	Confusion Matrix
	table, output
  -CLASSES:     	Class Values
	table, output
  -SUMMARY:     	Summary
	table, output
  -NO_CLASS:    	Unclassified
	boolean
	Default: 1