Package: spanner
Type: Package
Title: Utilities to Support Lidar Applications at the Landscape,
        Forest, and Tree Scale
Version: 1.0.5
Date: 2026-09-18
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
RdMacros: mathjaxr
LinkingTo: lidR (>= 4.3.3), 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 (>= 4.3.3),
Suggests: testthat (>= 3.0.0), magick, rgl, rstac
Config/testthat/edition: 3
Config/roxygen2/version: 8.1.0
NeedsCompilation: yes
Packaged: 2026-10-18 11:16:40 UTC; root
Author: Andrew Sanchez Meador [aut, cre, ctb] (ORCID:
        <https://orcid.org/0000-0003-4238-8587>), Jonathon Donager
        [aut, ctb] (ORCID: <https://orcid.org/0000-0001-9448-1703>),
        Blackburn Ryan [aut, ctb] (ORCID:
        <https://orcid.org/0000-0002-2952-0865>), Cannon Jeffery [ctb]
        (ORCID: <https://orcid.org/0000-0002-8436-8712>), Tiago de
        Conto [ctb, cph] (Author of included TreeLS code), Keith O'Hara
        [ctb, cph] (Author of included OptimLib code)
Maintainer: Andrew Sanchez Meador <Andrew.SanchezMeador@nau.edu>
Repository: https://cran.r-universe.dev
Date/Publication: 2026-09-18 16:35:14 UTC
RemoteUrl: https://github.com/cran/spanner
RemoteRef: HEAD
RemoteSha: 97140116ac8664b4025f7ba45376fa0a1fdada2b