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ecc2n - n-value of ellipse with given eccentricity

Syntax

n = ecc2n(eccentricity)

Description

n = ecc2n(eccentricity) returns the equivalent n for the input eccentricities. If the input, eccentricity, is a two-column vector, only the second column is used. This allows the standard two-element ellipsoid vectors to be used as rows of the input, because the second element of these vectors is the eccentricity. In all other cases, all columns of the input are used.

Eccentricity and the parameter n are two methods of defining an ellipsoid. The definition of n is

(semimajor axis – semiminor axis)/(semimajor axis + semiminor axis)

Example

n = ecc2n(almanac('earth','ellipsoid'))
n =
   0.00167922039463

See Also

almanac, ecc2flat, majaxis, n2ecc

ecc2flat

ecef2geodetic

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