Package: phenofit
Type: Package
Title: Extract Remote Sensing Vegetation Phenology
Version: 0.3.11
Authors@R: c(
    person("Dongdong", "Kong", role = c("aut", "cre"), email = "kongdd.sysu@gmail.com"),
    person("Mingzhong", "Xiao", role = c("aut"), email = "xmingzh@mail2.sysu.edu.cn"),
    person("Yongqiang", "Zhang", role = c("aut"), email = "yongqiang.zhang2014@gmail.com"),
    person("Xihui", "Gu", role = c("aut"), email = "guxh@cug.edu.cn"), 
    person("Jianjian", "Cui", role = c("aut"), email = "cuijj6@mail2.sysu.edu.cn"))
Description: The merits of 'TIMESAT' and 'phenopix' are adopted.
        Besides, a simple and growing season dividing method and a
        practical snow elimination method based on Whittaker were
        proposed. 7 curve fitting methods and 4 phenology extraction
        methods were provided. Parameters boundary are considered for
        every curve fitting methods according to their ecological
        meaning. And 'optimx' is used to select best optimization
        method for different curve fitting methods. Reference: Kong,
        D., (2020). R package: A state-of-the-art Vegetation Phenology
        extraction package, phenofit version 0.3.1,
        <doi:10.5281/zenodo.5150204>; Kong, D., Zhang, Y., Wang, D.,
        Chen, J., & Gu, X. (2020). Photoperiod Explains the
        Asynchronization Between Vegetation Carbon Phenology and
        Vegetation Greenness Phenology. Journal of Geophysical
        Research: Biogeosciences, 125(8), e2020JG005636.
        <doi:10.1029/2020JG005636>; Kong, D., Zhang, Y., Gu, X., &
        Wang, D. (2019). A robust method for reconstructing global
        MODIS EVI time series on the Google Earth Engine. ISPRS Journal
        of Photogrammetry and Remote Sensing, 155, 13–24; Zhang, Q.,
        Kong, D., Shi, P., Singh, V.P., Sun, P., 2018. Vegetation
        phenology on the Qinghai-Tibetan Plateau and its response to
        climate change (1982–2013). Agric. For. Meteorol. 248, 408–417.
        <doi:10.1016/j.agrformet.2017.10.026>.
License: GPL-2 | file LICENSE
Encoding: UTF-8
LazyData: true
RoxygenNote: 7.3.3
LinkingTo: Rcpp, RcppArmadillo
Depends: R (>= 3.1)
Imports: Rcpp, purrr, dplyr (>= 1.1.0), stringr, magrittr, lubridate,
        data.table, zoo, gridExtra, ggplot2, optimx, ucminf, numDeriv,
        methods, zeallot
Suggests: knitr, rmarkdown, testthat (>= 2.1.0)
URL: https://github.com/eco-hydro/phenofit
BugReports: https://github.com/eco-hydro/phenofit/issues
Roxygen: list(markdown = TRUE)
VignetteBuilder: knitr
Config/pak/sysreqs: cmake libicu-dev
Repository: https://rpkgs.r-universe.dev
Date/Publication: 2026-01-23 04:28:22 UTC
RemoteUrl: https://github.com/eco-hydro/phenofit
RemoteRef: HEAD
RemoteSha: e563f32d5953ccc2c8cf657fec95839d94249a76
NeedsCompilation: yes
Packaged: 2026-06-22 11:38:41 UTC; root
Author: Dongdong Kong [aut, cre],
  Mingzhong Xiao [aut],
  Yongqiang Zhang [aut],
  Xihui Gu [aut],
  Jianjian Cui [aut]
Maintainer: Dongdong Kong <kongdd.sysu@gmail.com>