Package: PowerSDI
Type: Package
Title: Calculate Standardised Drought Indices Using NASA POWER Data
Version: 1.0.0.9000
Authors@R: c(
  person(
    given = "Gabriel Constantino",
    family = "Blain",
    role = c("aut", "cre"),
    email = "gabriel.blain@sp.gov.br",
    comment = c(ORCID = "0000-0001-8832-7734")
  ),
  person(
    given = "Graciela R.",
    family = "Sobierajski",
    role = "aut",
    comment = c(ORCID = "0000-0002-7211-9268")
  ),
  person(
    given = "Leticia L.",
    family = "Martins",
    role = "aut",
    comment = c(ORCID = "0000-0002-0299-3005")
  ),
  person(
    given = "Adam H.",
    family = "Sparks",
    email = "adamhsparks@gmail.com",
    role = "aut",
    comment = c(ORCID = "0000-0002-0061-8359")))
Description: A set of functions designed to calculate the standardised
        precipitation and standardised precipitation evapotranspiration
        indices using NASA POWER data as described in Blain et al.
        (2023) <doi:10.2139/ssrn.4442843>.  These indices are
        calculated using a reference data source.  The functions verify
        if the indices' estimates meet the assumption of normality and
        how well NASA POWER estimates represent real-world data.
        Indices are calculated in a routine mode.  Potential
        evapotranspiration amounts and the difference between rainfall
        and potential evapotranspiration are also calculated.  The
        functions adopt a basic time scale that splits each month into
        four periods.  Days 1 to 7, days 8 to 14, days 15 to 21, and
        days 22 to 28, 29, 30, or 31, where 'TS=4' corresponds to a
        1-month length moving window (calculated 4 times per month) and
        'TS=48' corresponds to a 12-month length moving window
        (calculated 4 times per month).
License: MIT + file LICENSE
Encoding: UTF-8
LazyData: true
RoxygenNote: 7.3.2
Depends: R (>= 3.1.0)
Imports: graphics, lmom, lubridate, nasapower, stats
URL: https://github.com/gabrielblain/PowerSDI
BugReports: https://github.com/gabrielblain/PowerSDI/issues
Suggests: knitr, rmarkdown, testthat (>= 3.0.0), vcr (>= 0.6.0), vdiffr
        (>= 1.0.0)
Config/testthat/edition: 3
Config/testthat/parallel: true
VignetteBuilder: knitr
Language: en-GB
Config/pak/sysreqs: libssl-dev libx11-dev
Repository: https://gabrielblain.r-universe.dev
Date/Publication: 2024-07-23 11:43:18 UTC
RemoteUrl: https://github.com/gabrielblain/powersdi
RemoteRef: HEAD
RemoteSha: 10f64a351cb39f51b5f885b9f959a35a242c4586
NeedsCompilation: no
Packaged: 2026-07-15 07:38:20 UTC; root
Author: Gabriel Constantino Blain [aut, cre] (ORCID:
    <https://orcid.org/0000-0001-8832-7734>),
  Graciela R. Sobierajski [aut] (ORCID:
    <https://orcid.org/0000-0002-7211-9268>),
  Leticia L. Martins [aut] (ORCID:
    <https://orcid.org/0000-0002-0299-3005>),
  Adam H. Sparks [aut] (ORCID: <https://orcid.org/0000-0002-0061-8359>)
Maintainer: Gabriel Constantino Blain <gabriel.blain@sp.gov.br>