sphere_dist

a matrix with longitudes and latitudes in decimal degrees. The
longitudes should be provided in the first column (they are the
x-coordinate) and the latitudes should be provided in the second column
(they are the y-coordinate).

coords

the radius of the Earth, defaults to 6378.137 km

This calculation uses the Haversine method of computing great
 circle distances in kilometers on a spherical Earth (r = 6378.137 km). This
 code was taken from fields::rdist.earth by Doug Nychka, John Paige, Florian
 Gerber.

internal

Functions for calculating metrics for the measurement biodiversity
and its changes across scales, treatments, and gradients. The methods
implemented in this package are described in:
Chase, J.M., et al. (2018) <doi:10.1111/ele.13151>,
McGlinn, D.J., et al. (2019) <doi:10.1111/2041-210X.13102>, and
McGlinn, D.J., et al. (2021) <doi:10.1002/ecy.3233>.

Daniel McGlinn

mobr

Measurement of Biodiversity

Xiao Xiao

Brian McGill

Felix May

Thore Engel

Caroline Oliver

Shane Blowes

Tiffany Knight

Oliver Purschke

Nicholas Gotelli

Jon Chase

sphere_dist function

<dl><dt>coords</dt>
<dd>a matrix with longitudes and latitudes in decimal degrees. The
longitudes should be provided in the first column (they are the
x-coordinate) and the latitudes should be provided in the second column
(they are the y-coordinate).</dd>
<dt>r</dt>
<dd>the radius of the Earth, defaults to 6378.137 km</dd></dl>

Arguments

Internal function for distance matrix assuming inputs are longitude and
latitudes on a spherical Earth. — sphere_dist

<dl>

<dt>coords</dt>
<dd>a matrix with longitudes and latitudes in decimal degrees. The
longitudes should be provided in the first column (they are the
x-coordinate) and the latitudes should be provided in the second column
(they are the y-coordinate).</dd>


<dt>r</dt>
<dd>the radius of the Earth, defaults to 6378.137 km</dd>

</dl>

sphere_dist: Internal function for distance matrix assuming inputs are longitude and latitudes on a spherical Earth.

Description

Usage

Value

Arguments