Map Accuracy Tools Load Example 1 Load Example 2 Resources for exploring thematic map accuracy (instructions, download underlying R code)

Confusion Matrix Add a new class

User Acc. User Acc. (CI)
±
Weights
Producer Acc.
Producer Acc. (CI) ±
Portmanteau
Portmanteau (partial)

Merged Matrix Merge classes

Click on "Merge classes" to create a merged confusion matrix...
User Acc. User Acc. (CI)
±
Weights
Producer Acc.
Producer Acc. (CI) ±
Portmanteau
Portmanteau (partial)
Drop classes here to delete

Overall metrics

Overall Accuracy (CI): )
Allocation Disagreement:
Shift:
Exchange:
Quantity Disagreement:
AMI (CI): )
Adjusted AMI:
Kappa (CI)*: )

Merged metrics

Overall Accuracy (CI): )
Allocation Disagreement:
Shift:
Exchange:
Quantity Disagreement:
AMI (CI): )
Adjusted AMI:
Kappa (CI)*: )

Import from CSV

Drop file here
Contains Header
Separator:

*Kappa is a metric whose use we do not encourage. We include it here to help users better understand its misleading properties. For a detailed discussion of its drawbacks, please see Pontius and Miliones (2011) Int. J. Remote Sensing 32: 4407-4429.

Download Confusion Matrix