rcosmo (version 1.1.2)

geo2sph: 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

# NOT RUN {
geo <- data.frame( lat = c(0, pi/3, pi/2), lon = c(0, pi/3, pi))
geo
sph <- geo2sph(geo)
sph

# }