Load package and demo dataset | Compute IQA and check CONAMA compliance | Summaries and plots | Render a report (writes to a temporary directory) | Interactive maps (plot_map)

Introduction | Package overview and included real data | Reading and validating water quality data | Handling censored values (ND / | Cleaning units and basic QA/QC | Computing indices (IQA and trophic state) | Water Quality Index (IQA) | Trophic State Index (IET) | Checking CONAMA 357/2005 compliance | Summary and reports | Generating plots | IQA visualization | Time series | Box plots | Heatmap | Generating a textual analysis and report | Summary and next steps | Next steps

Introduction | Water Quality Index (IQA/WQI) | Method overview | Default parameters and weights | Computing IQA | Handling missing parameters | Custom weights | Classification | Trophic State Index (IET) | Carlson IET | Lamparelli IET | Temporal Trend Analysis | Single parameter trend | Plotting trends | Multiple parameters | Parameter-specific Analysis | Summary statistics | Parameter plots | Statistical Methods | Theil-Sen estimator | Spearman correlation | Best Practices | Choosing parameters for IQA | Handling censored values | Trend analysis | Units consistency | References | Summary