Package: coiR
Type: Package
Title: Analysis of Canopy Openness Index from Fisheye Images
Version: 0.1.0
Authors@R: c(
    person(
      "Edson Nilton de Moura Silva-Júnior",
      email = "edsonbbiologia@gmail.com",
      role = c("aut", "cre")
    )
  )
Description: Tools to estimate the Canopy Openness Index (COI) from
        hemispherical (fisheye) canopy photographs. The package imports
        canopy images, crops them to the circular area delimited by the
        fisheye lens, binarizes them to separate sky from vegetation
        pixels, and computes the index as the proportion of sky pixels
        in the cropped image. Canopy openness is a measure related to
        canopy closure, canopy cover and understorey illumination, as
        discussed in Jennings, Brown and Sheil (1999) "Assessing forest
        canopies and understorey illumination: canopy closure, canopy
        cover and other measures" <doi:10.1093/forestry/72.1.59>.
        Example canopy images are included so users can test the
        workflow.
URL: https://github.com/Edbbioeco/coiR
BugReports: https://github.com/Edbbioeco/coiR/issues
License: MIT + file LICENSE
Encoding: UTF-8
Depends: R (>= 4.1)
Imports: ggplot2, dplyr, terra, tidyterra, rlang
Suggests: testthat (>= 3.0.0), purrr
Config/testthat/edition: 3
Config/roxygen2/version: 8.1.0
NeedsCompilation: no
Packaged: 2026-10-24 11:25:30 UTC; root
Author: Edson Nilton de Moura Silva-Júnior [aut, cre]
Maintainer: Edson Nilton de Moura Silva-Júnior
 <edsonbbiologia@gmail.com>
Repository: https://cran.r-universe.dev
Date/Publication: 2026-10-24 11:17:38 UTC
RemoteUrl: https://github.com/cran/coiR
RemoteRef: HEAD
RemoteSha: 6decc5906fd81f7f4b6ffc038f3f4bb93fd40f0f