Map validation

QGIS Processing toolbox with OTB plugin

1. Type into the search box of Processing tools Confusion and double click ComputeConfusionMatrix.
2. Set the classified map as Input image.
3. Select the output file name with the extension .csv under Matrix output.
4. The validation data can be in vector or raster format. Select as Ground truth vector.
5. Set the validation file CE_2020-01-03.shp as Input reference vector data.
6. Select the Field name valid_clas.
7. Click Run.
8. Open the CSV output file with Libre Office Calc or MS Excel. Calculate User accuracies, Producer accuracies, Overall accuracy and Kappa index.