spanner/DESCRIPTION at master · bi0m3trics/spanner · GitHub

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Package: spanner
Type: Package
Title: Utilities to Support Lidar Applications at the Landscape, Forest, and Tree Scale
Version: 1.0.4
Date: 2026-03-31
Authors@R: c(person("Andrew", "Sanchez Meador", email = "Andrew.SanchezMeador@nau.edu", role = c("aut", "cre", "ctb"), comment = c(ORCID = "0000-0003-4238-8587")),
             person("Jonathon", "Donager", email = "Jonathon.Donager@gmail.com", role = c("aut", "ctb"), comment = c(ORCID = "0000-0001-9448-1703")),
             person("Blackburn", "Ryan", email = "rcblackburn@cornell.edu", role = c("aut", "ctb"), comment = c(ORCID = "0000-0002-2952-0865")),
             person("Cannon", "Jeffery", email = "Jeffery.Cannon@jonesctr.org", role = c("ctb"), comment = c(ORCID = "0000-0002-8436-8712")),
             person("Tiago", "de Conto", role = c("ctb", "cph"), comment = "Author of included TreeLS code"),
             person("Keith", "O'Hara", role = c("ctb", "cph"), comment = "Author of included OptimLib code"))
Description: Implements algorithms for terrestrial, mobile, and airborne lidar processing, tree detection,
    segmentation, and attribute estimation (Donager et al., 2021)
    <doi:10.3390/rs13122297>, and a hierarchical patch delineation algorithm
    'PatchMorph' (Girvetz & Greco, 2007) <doi:10.1007/s10980-007-9104-8>. Tree
    detection uses rasterized point cloud metrics (relative neighborhood density and
    verticality) combined with RANSAC cylinder fitting to locate tree boles and estimate
    diameter at breast height. Tree segmentation applies graph-theory approaches inspired
    by Tao et al. (2015) <doi:10.1016/j.isprsjprs.2015.08.007> with cylinder fitting
    methods from de Conto et al. (2017) <doi:10.1016/j.compag.2017.07.019>. PatchMorph
    delineates habitat patches across spatial scales using organism-specific thresholds.
    Built on 'lidR' (Roussel et al., 2020) <doi:10.1016/j.rse.2020.112061>.
URL: https://github.com/bi0m3trics/spanner
License: GPL-3
Encoding: UTF-8
Roxygen: list(markdown = TRUE)
RoxygenNote: 7.3.3
RdMacros: mathjaxr
LinkingTo:
    lidR,
    RcppArmadillo,
    Rcpp (>= 1.0.13),
    RcppEigen,
    BH,
Imports:
    Rcpp (>= 1.0.13),
    conicfit,
    FNN,
    RANN,
    cppRouting,
    sf,
    terra,
    sfheaders,
    Rfast,
    geometry,
    dplyr,
    mathjaxr,
    data.table
Depends:
    R (>= 4.0.0),
    lidR (>= 4.2.0),
Suggests:
    testthat (>= 3.0.0),
    magick,
    rgl,
    rstac
Config/testthat/edition: 3