spanner

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>.

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CRAN Check Status

installed size is 22.4Mb
  sub-directories of 1Mb or more:
    extdata   8.6Mb
    libs     13.5Mb

installed size is 22.5Mb
  sub-directories of 1Mb or more:
    extdata   8.6Mb
    libs     13.6Mb

installed size is 10.4Mb
  sub-directories of 1Mb or more:
    extdata   8.7Mb
    libs      1.5Mb

File ‘spanner/libs/spanner.so’:
  Found non-API call to R: ‘R_UnboundValue’

Compiled code should not call non-API entry points in R.

See ‘Writing portable packages’ in the ‘Writing R Extensions’ manual,
and section ‘Moving into C API compliance’ for issues with the use of
non-API entry points.

Check History

installed size is 22.4Mb
  sub-directories of 1Mb or more:
    extdata   8.6Mb
    libs     13.5Mb

installed size is 22.8Mb
  sub-directories of 1Mb or more:
    extdata   8.6Mb
    libs     13.9Mb

installed size is 10.4Mb
  sub-directories of 1Mb or more:
    extdata   8.7Mb
    libs      1.5Mb

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