movegroup - Visualizing and Quantifying Space Use Data for Groups of Animals
Offers an easy and automated way to scale up individual-level space use analysis to that of groups. Contains functions from the 'move' package to calculate either a dynamic Brownian bridge movement model or dynamic Bivariate Gaussian bridges from movement data for individual animals, as well as functions to visualize and quantify space use for individuals aggregated in groups. Originally written with passive acoustic telemetry in mind, this package also provides functionality to account for unbalanced acoustic receiver array designs, and satellite tag data.
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brownian-bridgehome-rangehome-range-analysismigrationresidencyspace-usetracking
5.60 score 20 stars 4 scripts 255 downloads
gbm.auto - Automated Boosted Regression Tree Modelling and Mapping Suite
Automates delta log-normal boosted regression tree abundance prediction. Loops through parameters provided (LR (learning rate), TC (tree complexity), BF (bag fraction)), chooses best, simplifies, & generates line, dot & bar plots, & outputs these & predictions & a report, makes predicted abundance maps, and Unrepresentativeness surfaces. Package core built around 'gbm' (gradient boosting machine) functions in 'dismo' (Hijmans, Phillips, Leathwick & Jane Elith, 2020 & ongoing), itself built around 'gbm' (Greenwell, Boehmke, Cunningham & Metcalfe, 2020 & ongoing, originally by Ridgeway). Indebted to Elith/Leathwick/Hastie 2008 'Working Guide' <doi:10.1111/j.1365-2656.2008.01390.x>; workflow follows Appendix S3. See <https://www.simondedman.com/> for published guides and papers using this package.
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boosted-decision-treesboosted-regression-treesboosted-treesbrtgradient-boostingspecies-distribution-modelingspecies-distribution-modellingspecies-distribution-models
5.60 score 20 stars 20 scripts 284 downloads