Research Article

A Suite of Tools for Assessing Thematic Map Accuracy

Table 2

Main characteristics of the five submodels for the accuracy assessment Dinamica tool.

Submodel nameFunctionInput(s)Output(s)

Generate Confusion MatrixConstructs the raw and bias-adjusted confusion matricesThematic map under assessment, map of reference samplesRaw confusion matrix, bias-adjusted confusion matrix, map categories area, number of samples per map category

Calculate Accuracy Indices And CICalculates bias-adjusted accuracy indices along with their CI as well as error-adjusted estimates of the proportion area of the different categories with their CIsTables: raw confusion matrix, bias-adjusted confusion matrix, area per mapped category, number of samples per categoryOverall, user, and producer accuracies with their respective half confidence intervals.
Error adjusted proportion of categories estimated with its CI

Adjust MatrixApplies bias adjustment to the input raw matrixTables: map category’s area, raw confusion matrix, number of samples per map categoryBias-adjusted confusion matrix

BootstrapElaborates a replicate of the input raw matrix by sorting samples with repetitionRaw confusion matrixBootstrapped replicate of the input matrix

Bootstrap CICalculates confidence intervals (CI) around an index at a given significance level (by default 5%) with bootstrapped estimates of this indexTable of the index values derived from a large number of replicatesValue of the average and half confidence interval