calculate_haversine_distance_wgs84

Internal function to calculate distances using the Haversine formula with WGS84 ellipsoid.
Implements the algorithm described in Sinnott (1984) for computing great circle distances.

internal

Specialized toolkit for processing biological and fisheries data from Peru's anchovy (Engraulis ringens) fishery. Provides functions to analyze fishing logbooks, calculate biological indicators (length-weight relationships, juvenile percentages), generate spatial fishing indicators, and visualize regulatory measures from Peru's Ministry of Production. Features automated data processing from multiple file formats, coordinate validation, spatial analysis of fishing zones, and tools for analyzing fishing closure announcements and regulatory compliance. Includes built-in datasets of Peruvian coastal coordinates and parallel lines for analyzing fishing activities within regulatory zones.

Hans Ttito

Tivy

Toolkit for Investigation and Visualization of Young Anchovies

calculate_haversine_distance_wgs84 function

<dl><dt>lon1</dt>
<dd>Origin longitude.</dd>
<dt>lat1</dt>
<dd>Origin latitude.</dd>
<dt>lon2</dt>
<dd>Destination longitude vector.</dd>
<dt>lat2</dt>
<dd>Destination latitude vector.</dd>
<dt>unit</dt>
<dd>Output unit: "nm" or "km".</dd></dl>

Arguments

Calculate distance using Haversine formula — calculate_haversine_distance_wgs84

<dl>

<dt>lon1</dt>
<dd>Origin longitude.</dd>


<dt>lat1</dt>
<dd>Origin latitude.</dd>


<dt>lon2</dt>
<dd>Destination longitude vector.</dd>


<dt>lat2</dt>
<dd>Destination latitude vector.</dd>


<dt>unit</dt>
<dd>Output unit: "nm" or "km".</dd>

</dl>

calculate_haversine_distance_wgs84: Calculate distance using Haversine formula

Description

Usage

Value

Arguments

Details

References