Map validation

Revision as of 16:20, 5 January 2020

Type into the search box of Processing tools type Confusion and double click ComputeConfusionMatrix.

Set the classified map as Input image.
Select the output file name with the extension .csv under Matrix output.
The Ground truth reference data can be in vector or raster format. Select Ground truth as vector data file.
Set the validation CE_2020-01-03.shp as Input reference vector data.
Select the Field name valid_clas.
Click Run.
Open the CSV output file with Libre Office Calc or MS Excel. Calculate User accuracies, Producer accuracies, Overall accuracy and Kappa index.

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-=== Orfeo Toolbox ===
+=== QGIS Processing toolbox with OTB plugin ===
-* Type into the search box of the Windows taskbar: {{typed|text=mapla.bat}}. Click on mapla.bat to open  Monteverdi Application Launcher.
+* Type into the search box of Processing tools type {{typed|text=Confusion}} and double click '''ComputeConfusionMatrix'''.
-* In the search engine of mapla, type {{typed|text=Confusion}} and double click '''ComputeConfusionMatrix'''.
 # Set the classified map as {{button|text=Input image}}.
 # Select the output file name with the extension '''.csv''' under {{button|text=Matrix output}}.
-# The Output format is {{button|text=Choice of a confusion matrix as output}}.
 # The Ground truth reference data can be in vector or raster format. Select {{button|text=Ground truth as vector data file}}.
-# Set the validation '''lab07_validation.shp''' as {{button|text=Input reference vector data}}.
+# Set the validation '''CE_2020-01-03.shp''' as {{button|text=Input reference vector data}}.
-# Select the Field name '''C_ID'''.
+# Select the Field name '''valid_clas'''.
-# Click {{button|text=Execute}}.
+# Click {{button|text=Run}}.
 # Open the CSV output file with Libre Office Calc or MS Excel. Calculate User accuracies, Producer accuracies, Overall accuracy and Kappa index.