# Log-polar coordinates (radial coordinate )

## Description

Log-polar coordinates in the plane consist of a pair of real numbers (ρ,θ), where ρ is the logarithm of the distance between a given point and the origin and θ is the angle between a line of reference (the x-axis) and the line through the origin and the point. The angular coordinate is the same as for polar coordinates.

Related formulas## Variables

r | Radius ( radial coordinate) (dimensionless) |

e | e |

ρ | The logarithm of the distance between the given point and the origin (dimensionless) |