distance: Calculate distances between points

In MazamaScience/PWFSLSmoke: Utilities for Working with Air Quality Monitoring Data

Calculate distances between points

Description

This function uses the Haversine forumula for calculating great circle distances between points. This formula is purpoted to work better than the spherical law of cosines for very short distances.

Usage

distance(targetLon, targetLat, longitude, latitude)

Arguments

targetLon	longitude (decimal degrees) of the point from which distances are calculated
targetLat	latitude (decimal degrees) of the point from which distances are calculated
longitude	vector of longitudes for which a distance is calculated
latitude	vector of latitudes for which a distance is calculated

Value

Vector of distances in km.

Examples

# Seattle to Portland airports
SEA_lon <- -122.3088
SEA_lat <- 47.4502
PDX_lon <- -122.5951
PDX_lat <- 45.5898
distance(SEA_lon, SEA_lat, PDX_lon, PDX_lat)

MazamaScience/PWFSLSmoke documentation built on July 3, 2023, 11:03 a.m.