1 article for "Cylindrical Coordinates"

**Cylindrical Coordinates**[Astro*Index]

When (r,L,z) specify the position of a point on the surface of a cylinder of radius, r, at a `longitude' angle, L, and a height, z.

Conversions between rectangular cartesian and cylindrical coordinates are effected by means of the formulas:

x | = | rcosL | |
---|---|---|---|

y | = | rsinL | |

z | = | z | |

r | = | sqrt(x2 + y2) | |

L | = | atan2(y,x) | |

z | = | z | |

See also:

♦ Cartesian Coordinates

Astro*Index Copyright © 1997 Michael Erlewine