Mapping Toolbox

axes2ecc

Eccentricity of ellipse with given axis lengths

Syntax

eccentricity = axes2ecc(semimajor,semiminor) eccentricity = axes2ecc(axes)

Eccentricity, the second element of the standard ellipsoid vector in mapping toolbox, can be determined given both the semimajor and semiminor axes.

eccentricity = axes2ecc(semimajor,semiminor) returns the eccentricity associated with the input axes.

eccentricity = axes2ecc(axes) allows the axes inputs to be packed into a single two-column input of the form [semimajor, semiminor].

Using the axes for the default GRS 80 Earth model,

ecc = axes2ecc(6378.1370,6356.7523)
ecc =
   0.08181921804834

This is the eccentricity returned by almanac('earth','ellipsoid').