sightabilitymodel
Contains code for the SightabilityModel Pacakge
Science Score: 23.0%
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○CITATION.cff file
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○codemeta.json file
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○.zenodo.json file
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✓DOI references
Found 2 DOI reference(s) in README -
○Academic publication links
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✓Committers with academic emails
2 of 5 committers (40.0%) from academic institutions -
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○JOSS paper metadata
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○Scientific vocabulary similarity
Low similarity (10.6%) to scientific vocabulary
Repository
Contains code for the SightabilityModel Pacakge
Basic Info
- Host: GitHub
- Owner: jfieberg
- Language: HTML
- Default Branch: master
- Size: 4.72 MB
Statistics
- Stars: 1
- Watchers: 3
- Forks: 1
- Open Issues: 3
- Releases: 0
Metadata Files
README.md
SightabilityModel
Contains code for the SightabilityModel Package
Versions and installation
- Github To install the latest development version from Github,
install the newest version of the devtools package; then run
devtools::install_github("jfieberg/SightabilityModel", dependencies = TRUE, build_vignettes = TRUE)## Features
Estimates abundance, density, and ratio of variables in simple random sample or stratified random sample block design often used in studying ungulate populations. Can also be used with Domain Stratification (Heard et al., 2008) but SE will have to be estimated using bootstrapping.
In a typical study, the survey area is divided into strata and each stratum divided into blocks. Not all blocks need be the same area. Aerial surveys of selected blocks find groups of animals and the number of animals in the group is recorded, often divided by sex (bulls and cows) and age (calve and mature).
A key problem is that not all animals in a group are seen because sightability is < 1. A separate study of a known number of animal (e.g. radio collared) is used to estimate a sightability model. The actual sightability study data or the fitted mode from a sightability model using logistic regression is used to correct the observed counts in the study. The corrected (for sightability) counts are used to estimate density, abundance or ratios (e.g. bulls to cows).
References
Fieberg, J. 2012. Estimating Population Abundance Using Sightability Models: R SightabilityModel Package. Journal of Statistical Software, 51(9), 1-20. URL https://doi.org/10.18637/jss.v051.i09
Heard, D.C. A.B.D. Walker, J.B. Ayotte, and G.S. Watts. 2008. Using GIS to modify a stratified random block survey design for moose. Alces 44: 11-116.
Steinhorst, Kirk R. and Samuel, Michael D. 1989. Sightability Adjustment Methods for Aerial Surveys of Wildlife Populations. Biometrics 45:415–425.
Wong, C. 1996. Population size estimation using the modified Horvitz-Thompson estimator with estimated sighting probabilities. Dissertation, Colorado State University, Fort Collins, USA.
Owner
- Name: John Fieberg
- Login: jfieberg
- Kind: user
- Location: St. Paul, MN
- Company: University of Minnesota
- Website: https://fieberg-lab.cfans.umn.edu/
- Repositories: 3
- Profile: https://github.com/jfieberg
GitHub Events
Total
Last Year
Committers
Last synced: over 2 years ago
Top Committers
| Name | Commits | |
|---|---|---|
| cschwarz-stat-sfu-cae | c****a@g****m | 36 |
| cschwarz-stat-sfu-ca | c****z@s****a | 28 |
| John Fieberg | j****g@u****u | 4 |
| ericnewkirk | 5****k | 3 |
| John R Fieberg | j****g@a****u | 2 |
Committer Domains (Top 20 + Academic)
Issues and Pull Requests
Last synced: over 2 years ago
All Time
- Total issues: 5
- Total pull requests: 1
- Average time to close issues: 1 day
- Average time to close pull requests: about 10 hours
- Total issue authors: 1
- Total pull request authors: 1
- Average comments per issue: 0.4
- Average comments per pull request: 0.0
- Merged pull requests: 1
- Bot issues: 0
- Bot pull requests: 0
Past Year
- Issues: 0
- Pull requests: 1
- Average time to close issues: N/A
- Average time to close pull requests: about 10 hours
- Issue authors: 0
- Pull request authors: 1
- Average comments per issue: 0
- Average comments per pull request: 0.0
- Merged pull requests: 1
- Bot issues: 0
- Bot pull requests: 0
Top Authors
Issue Authors
- cschwarz-stat-sfu-ca (5)
Pull Request Authors
- ericnewkirk (1)
Top Labels
Issue Labels
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Packages
- Total packages: 1
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Total downloads:
- cran 366 last-month
- Total dependent packages: 0
- Total dependent repositories: 0
- Total versions: 12
- Total maintainers: 1
cran.r-project.org: SightabilityModel
Wildlife Sightability Modeling
- Homepage: https://github.com/jfieberg/SightabilityModel
- Documentation: http://cran.r-project.org/web/packages/SightabilityModel/SightabilityModel.pdf
- License: GPL-2
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Latest release: 1.5.5
published almost 3 years ago
Rankings
Maintainers (1)
Dependencies
- Matrix * imports
- formula.tools * imports
- msm * imports
- mvtnorm * imports
- plyr * imports
- stats * imports
- survey * imports
- utils * imports
- GGally * suggests
- R.rsp * suggests
- car * suggests
- data.table * suggests
- ggplot2 * suggests
- kableExtra * suggests
- knitr * suggests
- readxl * suggests
- reshape2 * suggests
- rmarkdown * suggests
- tidyr * suggests
- tidyverse * suggests