# areaint

Surface area of polygon on sphere or ellipsoid

## Description

## Examples

## Input Arguments

## Output Arguments

## Algorithms

The

`areaint`

function measures areas enclosed by arbitrary polygons by using a line integral approach based on Green's Theorem. The accuracy is inversely proportional to the distance between the polygon vertices.When you specify

`ellipsoid`

as a nonspherical ellipsoid, the function converts the latitude data to the auxiliary authalic sphere.

## Alternative Functionality

Find the areas of polygon shapes represented by `geopolyshape`

and
`mappolyshape`

objects
by using the `area`

function.

## Version History

**Introduced before R2006a**