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
Roxygen: list(markdown = TRUE)
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
Config/pak/sysreqs: libabsl-dev cmake libfreetype6-dev libgdal-dev
        gdal-bin libgeos-dev libglu1-mesa-dev make texlive libpng-dev
        libuv1-dev libgl1-mesa-dev libssl-dev libproj-dev
        libsqlite3-dev libudunits2-dev zlib1g-dev
Repository: https://bi0m3trics.r-universe.dev
Date/Publication: 2026-09-18 13:07:27 UTC
RemoteUrl: https://github.com/bi0m3trics/spanner
RemoteRef: HEAD
RemoteSha: 5abaca343dfdd1bda3c5d9240fa1c8d886f53f2b
NeedsCompilation: yes
Packaged: 2026-10-19 09:19:30 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>