(Kernel) Isotope Niche Estimation
Biased cross-validation bandwidth matrix selector for bivariate data.
Least-squares cross-validation bandwidth matrix selector for multivari...
Normal mixture bandwidth.
Normal scale bandwidth using ks::Hns function.
Default Plug-in bandwidth selector using ks::Hpi function.
Smoothed cross-validation bandwidth selector.
Least-squares cross-validation bandwidth matrix selector for multivari...
Normal Reference Distribution.
Calculate Percent Overlap of Isotopic Niche Space
Internal helper function
Estimate Bivariate Normal Ellipse Isotope Niche
Estimate Kernel Isotope Niche
Estimate Minimum Convex Polygon (MCP) Isotope Niche
Create a sequence of points on a circle
Method to extract Niche Polygon Areas
Create a list of colors for plotKIN function
Miscellaneous functions to complete kernel 2D estimates: Get contour t...
Plotting function for rKIN polygons
rKIN: A package for computating isotopic niche space
Applies methods used to estimate animal homerange, but instead of geospatial coordinates, we use isotopic coordinates. The estimation methods include: 1) 2-dimensional bivariate normal kernel utilization density estimator, 2) bivariate normal ellipse estimator, and 3) minimum convex polygon estimator, all applied to stable isotope data. Additionally, functions to determine niche area, polygon overlap between groups and levels (confidence contours) and plotting capabilities.