pe_m

Calculates the meridional radius of curvature

Usage syntax

double pe_m (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 radius of curvature is the radius of curvature of the meridional ellipse at the point

Returns

Meridional radius of curvature at the point