clean_units

Normalizes units for water quality parameters. Currently handles common
conversions (mg/L to µg/L for phosphorus, unit standardization). Also
validates expected unit ranges and emits warnings for values outside
typical ranges.

Tools to import, clean, validate, and analyze freshwater quality data in Brazil. Implements water quality indices including the Water Quality Index (WQI/IQA), the Trophic State Index (TSI/IET) after Carlson (1977) <doi:10.4319/lo.1977.22.2.0361> and Lamparelli (2004) <https://www.teses.usp.br/teses/disponiveis/41/41134/tde-20032006-075813/publico/TeseLamparelli2004.pdf>, and the National Sanitation Foundation Water Quality Index (NSF WQI) <doi:10.1007/s11157-023-09650-7>. The package also checks compliance with Brazilian standard CONAMA Resolution 357/2005 <https://conama.mma.gov.br/?id=450&option=com_sisconama&task=arquivo.download> and generates reproducible reports for routine monitoring workflows.
The example dataset (`wq_demo`) is now a real subset from monitoring data (BURANHEM river, 2020-2024, 4 points, 20 rows, 14 columns including extra `rio`, `lat`, `lon`). All core examples and vignettes use this realistic sample, improving reproducibility and documentation value for users.

Vinicius Saraiva Santos

tikatuwq

Water Quality Assessment and Environmental Compliance in Brazil

clean_units function

<dl><dt>df</dt>
<dd>Input data frame / tibble.</dd>
<dt>units_map</dt>
<dd>Optional named list mapping parameter names to target
units (currently used for validation only).</dd></dl>

Arguments

Normalize/standardize units — clean_units

<dl>

<dt>df</dt>
<dd>Input data frame / tibble.</dd>


<dt>units_map</dt>
<dd>Optional named list mapping parameter names to target
units (currently used for validation only).</dd>

</dl>

clean_units: Normalize/standardize units

Description

Usage

Value

Arguments

Details

See Also

Examples