Science Score: 33.0%
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Keywords
Repository
Phenotypic index measures for oak decline severity
Basic Info
- Host: GitHub
- Owner: jasenfinch
- License: gpl-3.0
- Language: R
- Default Branch: master
- Homepage: https://jasenfinch.github.io/pdi/
- Size: 762 KB
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- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
- Releases: 0
Topics
Metadata Files
README.md
pdi
Phenotypic index measures for oak decline severity
Oak declines are complex disease syndromes that consist of many visual indicators that include aspects of tree size, crown condition and trunk condition. This can cause difficulty in the manual classification of symptomatic and non-symptomatic trees from what is in reality a broad spectrum of oak tree health condition.
Two oak decline indexes have been developed to quantitatively describe and differentiate oak decline syndromes in Quercus robur. These include:
Phenotypic Decline Index (PDI) - a measure of overall decline severity, scoring trees between 0 and 1. More severely declining oak trees having a score closer to 1.
Decline Acuteness Index (DAI) - a measure to differentiate between Chronic Oak Decline (COD) and Acute Oak Decline with a score between -1 and 1. Acutely declining trees having a score closer to 1 and chronically declining trees having a score closer to -1.
This package provides the tools generate these decline indexes using machine learning algorithm random forest.
The methodology is outlined in the article:
Installation
The package can be installed from CRAN using:
r
install.packages('pdi')
Or this development version of the package can be installed from GitHub:
r
devtools::install_github('jasenfinch/pdi',build_vignettes = TRUE)
Learn more
The package documentation can be browsed online at https://jasenfinch.github.io/pdi/.
If this is your first time using pdi see the Generating phenotypic decline indexes using the pdi package vignette for information on how to get started.
If you believe you've found a bug in pdi, please file a bug (and, if
possible, a reproducible example) at
https://github.com/jasenfinch/pdi/issues.
Owner
- Name: Jasen Finch
- Login: jasenfinch
- Kind: user
- Location: Aberystwyth
- Company: Aberystwyth University
- Repositories: 14
- Profile: https://github.com/jasenfinch
Postdoctoral Research Fellow in Acute Oak Decline. Applying metabolomics to tree health.
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| Name | Commits | |
|---|---|---|
| jasenfinch | j****9@a****k | 114 |
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- Total packages: 1
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Total downloads:
- cran 217 last-month
- Total dependent packages: 0
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- Total versions: 2
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cran.r-project.org: pdi
Phenotypic Index Measures for Oak Decline Severity
- Homepage: https://jasenfinch.github.io/pdi
- Documentation: http://cran.r-project.org/web/packages/pdi/pdi.pdf
- License: GPL-3
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Latest release: 0.4.2
published over 5 years ago
Rankings
Maintainers (1)
Dependencies
- dplyr * imports
- magrittr * imports
- purrr * imports
- randomForest * imports
- readxl * imports
- stringr * imports
- tibble * imports
- tidyr * imports
- tidyselect * imports
- covr * suggests
- ggplot2 * suggests
- knitr * suggests
- rmarkdown * suggests
- testthat * suggests