pe_q

Calculates the meridional arc distance from the equator

Usage syntax

double pe_q (double a, double e2, double phi);

Parameters
a, e2 Semimajor axis and eccentricity squared of the spheroid
phi Geographic latitude (measured in radians) of the point
Description

Meridional arc distance to the point is the distance measured from the equator along the meridional ellipse to the point.

where

Returns

Meridional arc distance to the point