geo2sph: Convert geographic to spherical coordinates

In frycast/rcosmo: Cosmic Microwave Background Data Analysis

Convert geographic to spherical coordinates

Description

Convert latitude (lat) and longitude (lon) to spherical coordinates (theta, phi) with theta in [0,pi] and phi in [0,2*pi). All values lat, lon, theta, phi are assumed to be in radians.

Usage

geo2sph(...)

Arguments

...	A data.frame with columns lat and lon, or named vectors of lat and lon.

Value

A data.frame with columns theta and phi.

Examples

geo <- data.frame( lat = c(0, pi/3, pi/2), lon = c(0, pi/3, pi))
geo
sph <- geo2sph(geo)
sph

frycast/rcosmo documentation built on Oct. 11, 2022, 5:21 p.m.