spanner
Utilities to Support Lidar Applications at the Landscape, Forest, and Tree Scale
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
Show all 14 flavors
| Flavor | Status |
|---|---|
| r-devel-linux-x86_64-debian-clang | OK |
| r-devel-linux-x86_64-debian-gcc | OK |
| r-devel-linux-x86_64-fedora-clang | OK |
| r-devel-linux-x86_64-fedora-gcc | OK |
| r-devel-macos-arm64 | OK |
| r-devel-windows-x86_64 | OK |
| r-oldrel-macos-arm64 | NOTE |
| r-oldrel-macos-x86_64 | NOTE |
| r-oldrel-windows-x86_64 | NOTE |
| r-patched-linux-x86_64 | OK |
| r-release-linux-x86_64 | OK |
| r-release-macos-arm64 | OK |
| r-release-macos-x86_64 | OK |
| r-release-windows-x86_64 | OK |
Check details (14 non-OK)
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installed package size
installed size is 22.4Mb
sub-directories of 1Mb or more:
extdata 8.6Mb
libs 13.5Mb
installed package size
installed size is 22.8Mb
sub-directories of 1Mb or more:
extdata 8.6Mb
libs 13.9Mb
installed package size
installed size is 10.4Mb
sub-directories of 1Mb or more:
extdata 8.7Mb
libs 1.5Mb
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Check History
NOTE 11 OK · 3 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE Mar 9, 2026
installed package size
installed size is 22.4Mb
sub-directories of 1Mb or more:
extdata 8.6Mb
libs 13.5Mb
installed package size
installed size is 22.8Mb
sub-directories of 1Mb or more:
extdata 8.6Mb
libs 13.9Mb
installed package size
installed size is 10.4Mb
sub-directories of 1Mb or more:
extdata 8.7Mb
libs 1.5Mb