createSPDF

<p>Create empty sf data frame with estObj schema</p>

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.

Shannon E Albeke

rKIN

(Kernel) Isotope Niche Estimation

createSPDF function

<p>Shannon E. Albeke, Wyoming Geographic Information Science Center, University of Wyoming</p>

createSPDF: Internal helper function

Description

Usage

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Author