getKernelThreshold

Obtains the quantile threshold levels for a vector of probabilities from a
kernel density estimate.

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

getKernelThreshold function

<dl><dt>x</dt>
<dd>Numeric vector of probabilities from a kernel density estimate</dd>
<dt>levels</dt>
<dd>Numeric vector of desired percent levels (e.g. c(10, 50, 90). Should not be less than 1 or greater than 99)</dd></dl>

Arguments

Shannon E. Albeke, Wyoming Geographic Information Science Center, University of Wyoming

Author

Miscellaneous functions to complete kernel 2D estimates: Get contour threshold values — getKernelThreshold

<dl>

<dt>x</dt>
<dd>Numeric vector of probabilities from a kernel density estimate</dd>


<dt>levels</dt>
<dd>Numeric vector of desired percent levels (e.g. c(10, 50, 90). Should not be less than 1 or greater than 99)</dd>

</dl>

getKernelThreshold: Miscellaneous functions to complete kernel 2D estimates: Get contour threshold values

Description

Usage

Value

Arguments

Author