getRSI: Compute Range Shift Index

In marcher: Migration and Range Change Estimation in R

Description

The range shift index is a dimensionless measure of the distance of the centroids of two ranges divided by the diameter of the 95% area. This function uses the 95% confidence intervals from a range shift fit to calculate a point estimate and 95% confidence intervals of the RSI.

Usage

getRSI(FIT, n1 = 1, n2 = 2, nboot = 1000)

Arguments

FIT	a rnage shift object, outputted by estimate_shift
n1	the indices of the ranges to estimate from and to, i.e., for single shift, 1 and 2. For three ranges (two shifts) it can be 1 and 2, 2 and 3, or 1 and 3 - if the ultimate shift is the one of interest.
n2	see n1
nboot	number of bootstrap simulation

Value

returns a data frame reporting the distance traveled, the RSI and respective bootstrapped confidence intervals.

marcher documentation built on May 2, 2019, 9:44 a.m.