Overview | Notation | 1. Crown volume | 1.1 Ellipsoid | 1.2 Cone | 1.3 Cylinder | 1.4 Paraboloid | 1.5 Fan / Umbrella | 1.6 Comparing shapes | 1.7 Unified dispatcher | 2. Crown area | 2.1 Crown profile areas (lateral cross-section) | 2.2 Crown projection area (horizontal) | 3. Morphometric indices | 3.1 Crown Ratio — CR | 3.2 Crown Form Factor — CF | 3.3 Slenderness Index — SLI | 3.4 Salience Index — SAI | 3.5 Scope Index — SCI | 3.6 Vital Space Index — VSI | 3.7 Summary table | 3.8 Computing all indices at once | 4. Batch processing with crown_metrics() | References
Package: crownmetrics 0.1.0
crownmetrics: Tree Crown Shape and Morphometric Parameters
Provides functions to compute tree crown volume and projected area using geometric solid approximations (ellipsoid, cone, cylinder, paraboloid, and fan shapes), and to calculate morphometric indices commonly used in forest inventory and silviculture, including crown ratio, crown form factor, slenderness, salience index, and scope index. Methods are based on peer-reviewed literature in forest science.
Authors:
crownmetrics_0.1.0.tar.gz
crownmetrics_0.1.0.zip(r-4.7-any)crownmetrics_0.1.0.zip(r-4.6-any)crownmetrics_0.1.0.zip(r-4.5-any)
crownmetrics_0.1.0.tgz(r-4.6-any)crownmetrics_0.1.0.tgz(r-4.5-any)
crownmetrics_0.1.0.tar.gz(r-4.7-any)crownmetrics_0.1.0.tar.gz(r-4.6-any)
crownmetrics_0.1.0.tgz(r-4.6-emscripten)
manual.pdf |manual.html✨
DESCRIPTION
card.svg |card.png
crownmetrics/json (API)
| # Install 'crownmetrics' in R: |
| install.packages('crownmetrics', repos = c('https://sergiocostafh.r-universe.dev', 'https://cloud.r-project.org')) |
Bug tracker:https://github.com/sergiocostafh/crownmetrics/issues
Last updated from:9b5a226ad8. Checks:9 OK. Indexed: yes.
| Target | Result | Time | Files | Syslog |
|---|---|---|---|---|
| linux-devel-x86_64 | OK | 128 | ||
| source / vignettes | OK | 193 | ||
| linux-release-x86_64 | OK | 130 | ||
| macos-release-arm64 | OK | 175 | ||
| macos-oldrel-arm64 | OK | 150 | ||
| windows-devel | OK | 110 | ||
| windows-release | OK | 90 | ||
| windows-oldrel | OK | 65 | ||
| wasm-release | OK | 99 |
Exports:crown_areacrown_area_ellipsecrown_area_fancrown_area_rectanglecrown_area_trianglecrown_formcrown_metricscrown_morphometricscrown_projection_areacrown_ratiocrown_volumecrown_volume_conecrown_volume_cylindercrown_volume_ellipsoidcrown_volume_fancrown_volume_paraboloidsalience_indexscope_indexslendernessvital_space_index
Dependencies:clidplyrgenericsgluelifecyclemagrittrpillarpkgconfigR6rlangtibbletidyselectutf8vctrswithr
Readme and manuals
Help Manual
| Help page | Topics |
|---|---|
| Crown Profile Area by Shape | crown_area |
| Crown Profile Area — Ellipse | crown_area_ellipse |
| Crown Profile Area — Fan (Umbrella) Shape | crown_area_fan |
| Crown Profile Area — Rectangle (Cylinder) | crown_area_rectangle |
| Crown Profile Area — Triangle (Cone) | crown_area_triangle |
| Crown Form Factor | crown_form |
| Compute All Crown Metrics for a Data Frame | crown_metrics |
| All Crown Morphometric Indices | crown_morphometrics |
| Crown Projection Area (Horizontal) | crown_projection_area |
| Crown Ratio | crown_ratio |
| Crown Volume by Shape | crown_volume |
| Crown Volume — Cone | crown_volume_cone |
| Crown Volume — Cylinder | crown_volume_cylinder |
| Crown Volume — Ellipsoid (or Sphere) | crown_volume_ellipsoid |
| Crown Volume — Fan (Umbrella) Shape | crown_volume_fan |
| Crown Volume — Paraboloid | crown_volume_paraboloid |
| Salience Index | salience_index |
| Scope Index | scope_index |
| Slenderness Index | slenderness |
| Vital Space Index | vital_space_index |
