spanner
Utilities to support landscape-, forest-, and tree-related data collection, manipulation, analysis, modelling, and visualization.
https://github.com/bi0m3trics/spanner
Category: Biosphere
Sub Category: Forest Modeling and Analysis
Last synced: about 6 hours ago
JSON representation
Repository metadata
Utilities to support landscape-, forest-, and tree-related data collection, manipulation, analysis, modelling, and visualization.
- Host: GitHub
- URL: https://github.com/bi0m3trics/spanner
- Owner: bi0m3trics
- License: gpl-3.0
- Created: 2020-03-11T14:53:39.000Z (about 5 years ago)
- Default Branch: master
- Last Pushed: 2025-03-31T12:34:25.000Z (about 1 month ago)
- Last Synced: 2025-04-20T09:04:22.494Z (10 days ago)
- Language: C++
- Size: 56.8 MB
- Stars: 27
- Watchers: 5
- Forks: 8
- Open Issues: 0
- Releases: 2
-
Metadata Files:
- Readme: README.md
- Changelog: NEWS.md
- License: LICENSE
README.md
spanner
Definition of spanner
1 (chiefly British): WRENCH
2: a wrench that has a hole, projection, or hook at one or both ends of the head for engaging with a corresponding device on the object that is to be turned
3: utilities to support landscape-, forest-, and tree-related data collection, manipulation, analysis, modelling, and visualization.
Install spanner
Get the latest released version of spanner from github.
remotes::install_github('bi0m3trics/spanner')
Workflows
Terrestial Lidar Tree Attributes and Segmentation
The following is the full processing pipeline described in Donager et al. (2021), and provides an example from downloading an example dataset, preprocesing it using lidR's functionality, estimating tree locations and DBH by rasterizing individual point cloud values of relative neighborhood density (at 0.3 and 1 m radius) and verticality within a slice of the normalized point cloud around breast height to
(1.37 m), to individual tree segmentation following ecological principles for “growing” trees based on input locations in a graph-theory approach. Relies heavily on work of Roussel et al (2020), Tao and others (2015), and de Conto et al. (2017).
Citation: Donager, Jonathon J., Andrew J. Sánchez Meador, and Ryan C. Blackburn 2021. Adjudicating Perspectives on Forest Structure: How Do Airborne, Terrestrial, and Mobile Lidar-Derived Estimates Compare? Remote Sensing 13, no. 12: 2297. https://doi.org/10.3390/rs13122297
PatchMorph: Patch Delineation Algorithm
The patchwoRk function implements a patch delineation algorithm [at present it only implements 'PatchMorph' (Girvetz & Greco 2007), which can delineate patches across a range of spatial scales based on three organism-specific thresholds - (1) land cover density threshold, (2) habitat gap maximum thickness (gap threshold), and (3) habitat patch minimum thickness (spur threshold)].
Citation: Girvetz EH, and Greco SE. 2007. How to define a patch: a spatial model for hierarchically delineating organism-specific habitat patches. Landscape Ecology 22: 1131-1142. http://dx.doi.org/10.1007/s10980-007-9104-8
Owner metadata
- Name: Andrew Sánchez Meador
- Login: bi0m3trics
- Email:
- Kind: user
- Description: Exec. Director of Ecological Restoration Institute and Professor in the School of Forestry at Northern Arizona University in Flagstaff, AZ
- Website: https://directory.nau.edu/person/ajm69
- Location: Flagstaff, AZ
- Twitter: bi0m3trics
- Company: Ecological Restoration Inst. and School of Forestry, Northern Arizona Univ.
- Icon url: https://avatars.githubusercontent.com/u/3956719?u=30a95b62376da02e4581839ccebec1ed3c1bcf84&v=4
- Repositories: 12
- Last ynced at: 2024-06-11T15:53:19.772Z
- Profile URL: https://github.com/bi0m3trics
GitHub Events
Total
- Watch event: 3
- Push event: 8
- Gollum event: 5
Last Year
- Watch event: 3
- Push event: 8
- Gollum event: 5
Committers metadata
Last synced: 1 day ago
Total Commits: 108
Total Committers: 3
Avg Commits per committer: 36.0
Development Distribution Score (DDS): 0.102
Commits in past year: 33
Committers in past year: 1
Avg Commits per committer in past year: 33.0
Development Distribution Score (DDS) in past year: 0.0
| Name | Commits | |
|---|---|---|
| Andrew Sánchez Meador | a****r@n****u | 97 |
| JDonager | j****r@g****m | 9 |
| Jeffery B Cannon | 3****n | 2 |
Committer domains:
- nau.edu: 1
Issue and Pull Request metadata
Last synced: 1 day ago
Total issues: 4
Total pull requests: 4
Average time to close issues: 20 days
Average time to close pull requests: 1 day
Total issue authors: 3
Total pull request authors: 2
Average comments per issue: 7.75
Average comments per pull request: 0.0
Merged pull request: 3
Bot issues: 0
Bot pull requests: 0
Past year issues: 0
Past year pull requests: 0
Past year average time to close issues: N/A
Past year average time to close pull requests: N/A
Past year issue authors: 0
Past year pull request authors: 0
Past year average comments per issue: 0
Past year average comments per pull request: 0
Past year merged pull request: 0
Past year bot issues: 0
Past year bot pull requests: 0
Top Issue Authors
- cingularities (2)
- rdeinin (1)
- summitbri (1)
Top Pull Request Authors
- jbcannon (3)
- bi0m3trics (1)
Top Issue Labels
- bug (1)
Top Pull Request Labels
Dependencies
- data.table * depends
- lidR * depends
- magrittr * depends
- FNN * imports
- RANN * imports
- Rcpp * imports
- Rfast * imports
- conicfit * imports
- cppRouting * imports
- data.table * imports
- dbscan * imports
- dplyr * imports
- igraph * imports
- lidR * imports
- lwgeom * imports
- mathjaxr * imports
- sf * imports
- sfheaders * imports
- stringr * imports
- terra * imports
- testthat >= 3.0.0 suggests
Score: 4.394449154672439