pix2coords: Convert pixel indices to cartesian/spherical coordinates

In frycast/rcosmo: Cosmic Microwave Background Data Analysis

Convert pixel indices to cartesian/spherical coordinates

Description

Convert HEALPix pixel indices to cartesian or spherical coordinates

Usage

pix2coords(nside, coords = "cartesian", ordering = "nested", spix)

Arguments

nside	the nside parameter (integer number 2^k)
coords	'cartesian' or 'spherical' coordinates
ordering	'ring' or 'nested' ordering
spix	optional integer or vector of sample pixel indices

Value

a data.frame with columns 'x', 'y', 'z' (cartesian) or 'theta', 'phi' (spherical)

Examples

pix2coords(nside=1, spix=c(2,5))
pix2coords(nside=1,  coords = "spherical", spix=c(2,5))

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