SAGA-GIS Tool Library Documentation (v7.8.2)

Tool Confusion Matrix (Two Grids)

Compares two classified grids and creates a confusion matrix and derived coefficients as well as the combinations of both classifications as new grid. Grid classes have to be defined with a look-up table and values of both grids must match each other for the subsequent comparison. A typical application is a change detection analysis based on land cover classification of satellite imagery.

Parameters

 NameTypeIdentifierDescriptionConstraints
InputClassification 1Grid, inputONE--
Look-up Table (*)Table, input, optionalONE_LUT--
Classification 2Grid, inputTWO--
Look-up Table (*)Table, input, optionalTWO_LUT--
OutputCombined ClassesGrid, outputCOMBINED--
Confusion MatrixTable, outputCONFUSION--
Class ValuesTable, outputCLASSES--
SummaryTable, outputSUMMARY--
OptionsGrid SystemGrid systemPARAMETERS_GRID_SYSTEM--
ValueTable fieldONE_LUT_MIN--
Value (Maximum) (*)Table fieldONE_LUT_MAX--
Name (*)Table fieldONE_LUT_NAM--
ValueTable fieldTWO_LUT_MIN--
Value (Maximum) (*)Table fieldTWO_LUT_MAX--
Name (*)Table fieldTWO_LUT_NAM--
Report Unchanged ClassesBooleanNOCHANGE-Default: 1
Include Unclassified CellsBooleanNODATA-Default: 1
Output as...ChoiceOUTPUT-Available Choices:
[0] cells
[1] percent
[2] area
Default: 0
(*) optional

Command-line

Usage: saga_cmd imagery_classification 2 [-ONE <str>] [-ONE_LUT <str>] [-ONE_LUT_MIN <str>] [-ONE_LUT_MAX <str>] [-ONE_LUT_NAM <str>] [-TWO <str>] [-TWO_LUT <str>] [-TWO_LUT_MIN <str>] [-TWO_LUT_MAX <str>] [-TWO_LUT_NAM <str>] [-COMBINED <str>] [-NOCHANGE <str>] [-NODATA <str>] [-CONFUSION <str>] [-OUTPUT <str>] [-CLASSES <str>] [-SUMMARY <str>]
  -ONE:<str>        	Classification 1
	Grid, input
  -ONE_LUT:<str>    	Look-up Table
	Table, input, optional
  -ONE_LUT_MIN:<str>	Value
	Table field
  -ONE_LUT_MAX:<str>	Value (Maximum)
	Table field
  -ONE_LUT_NAM:<str>	Name
	Table field
  -TWO:<str>        	Classification 2
	Grid, input
  -TWO_LUT:<str>    	Look-up Table
	Table, input, optional
  -TWO_LUT_MIN:<str>	Value
	Table field
  -TWO_LUT_MAX:<str>	Value (Maximum)
	Table field
  -TWO_LUT_NAM:<str>	Name
	Table field
  -COMBINED:<str>   	Combined Classes
	Grid, output
  -NOCHANGE:<str>   	Report Unchanged Classes
	Boolean
	Default: 1
  -NODATA:<str>     	Include Unclassified Cells
	Boolean
	Default: 1
  -CONFUSION:<str>  	Confusion Matrix
	Table, output
  -OUTPUT:<str>     	Output as...
	Choice
	Available Choices:
	[0] cells
	[1] percent
	[2] area
	Default: 0
  -CLASSES:<str>    	Class Values
	Table, output
  -SUMMARY:<str>    	Summary
	Table, output