| Mapping Toolbox | ![]() |
Convert from the n to the eccentricity representation of the ellipsoid
Syntax
eccentricity = n2ecc(n)
Description
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).
eccentricity = n2ecc(n) returns the equivalent eccentricities for the input n parameters. If the input, n, is a two-column vector, only the second column is used. This allows two-element vectors to be used as rows of the input, since the form [semimajor-axis, n] is a complete representation of an ellipsoid (but is not the standard form for geoid vectors in the Mapping Toolbox). In all other cases, all columns of the input are used.
ecc = n2ecc(0.00167922039463) ecc = 0.08181919104285
This eccentricity is the default value for the Earth.
See Also
almanac |
Planetary data |
ecc2flat majaxis |
Similar conversion functions |
ecc2n |
Convert from eccentricity to n |
| mlabel | namem | ![]() |