long_lat_to_cartesian

This function converts geographic coordinates, given as longitude and latitude in degrees, to Cartesian coordinates (x, y, z) assuming a spherical Earth model.

Provides efficient geospatial thinning algorithms to reduce
the density of coordinate data while maintaining spatial
relationships. Implements K-D Tree Approximate Nearest Neighbors
(ANN), R-Tree, and brute force thinning methods. It uses a modified version
of the R-tree structure from the 'rtree' package
<https://github.com/akoyabio/rtree>. The modified version can be downloaded
from <https://github.com/jmestret/rtree>.
For more information on the methods, see
Elseberg et al. (2012) <https://hdl.handle.net/10446/86202>.

Jorge Mestre-Tomás

GeoThinneR

Simple Spatial Thinning for Ecological and Spatial Analysis

long_lat_to_cartesian function

<dl><dt>long</dt>
<dd>Numeric vector of longitudes in degrees.</dd>
<dt>lat</dt>
<dd>Numeric vector of latitudes in degrees.</dd>
<dt>R</dt>
<dd>Radius of the Earth in kilometers (default: 6371 km).</dd></dl>

Arguments

Convert Geographic Coordinates to Cartesian Coordinates — long_lat_to_cartesian

<dl>

<dt>long</dt>
<dd>Numeric vector of longitudes in degrees.</dd>


<dt>lat</dt>
<dd>Numeric vector of latitudes in degrees.</dd>


<dt>R</dt>
<dd>Radius of the Earth in kilometers (default: 6371 km).</dd>

</dl>

long_lat_to_cartesian: Convert Geographic Coordinates to Cartesian Coordinates

Description

Usage

Value

Arguments

Examples