Package: tikatuwq
Type: Package
Title: Water Quality Assessment and Environmental Compliance in Brazil
Version: 0.9.0
Authors@R: 
    c(person(given = "Vinicius",
             family = "Saraiva Santos",
             role = c("aut", "cre"),
             email = "vinisaraiva@gmail.com",
             comment = c(ORCID = "0009-0007-1387-7927")))
Maintainer: Vinicius Saraiva Santos <vinisaraiva@gmail.com>
Description: Tools to import, clean, validate, and analyze freshwater quality data
    in Brazil. Implements water quality indices including the Water Quality Index
    ('WQI'/'IQA') using the weighted geometric mean following 'CETESB' methodology,
    the Trophic State Index ('TSI'/'IET') after Carlson (1977)
    <doi:10.4319/lo.1977.22.2.0361> and Lamparelli (2004)
    <https://teses.usp.br/teses/disponiveis/41/41134/tde-20032006-075813/publico/TeseLamparelli2004.pdf>,
    and the National Sanitation Foundation Water Quality Index ('NSF WQI', Brown
    (1970)). 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>
    including the legal frequency rule (Art. 15, 80% conformity over six or more
    samples per year), and provides seasonal analysis with regional flow-season
    calendars, pollutant load computation, exceedance probability estimation, 'IET'
    visualization, and multivariate 'PCA' tools for routine monitoring workflows.
    The example dataset ('wq_demo') is a real subset from 'INEMA' monitoring data
    from a river in Bahia, Brazil (2020-2024).
License: MIT + file LICENSE
Encoding: UTF-8
Language: en-US
LazyData: true
LazyDataCompression: xz
Depends: R (>= 4.1)
Imports: dplyr, readr, tibble, rlang, stats, utils, ggplot2, tidyr,
        lubridate, stringr, glue, scales, broom, purrr, tools
Suggests: testthat (>= 3.0.0), spelling, rmarkdown, knitr, pkgdown,
        leaflet, withr
VignetteBuilder: knitr
URL: https://github.com/tikatuwq/tikatuwq,
        https://tikatuwq.github.io/tikatuwq/
BugReports: https://github.com/tikatuwq/tikatuwq/issues
Config/testthat/edition: 3
RoxygenNote: 7.3.3
NeedsCompilation: no
Packaged: 2026-06-09 20:22:49 UTC; Vini
Author: Vinicius Saraiva Santos [aut, cre] (ORCID:
    <https://orcid.org/0009-0007-1387-7927>)
Repository: CRAN
Date/Publication: 2026-06-09 21:00:02 UTC
Built: R 4.5.2; ; 2026-06-10 01:41:52 UTC; unix
