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小圆与椭圆

定义小圆与椭圆

小圆是平面与球面相交形成的截面。椭圆是平面与圆锥曲面的交线。使用这些函数生成椭圆与小圆的坐标，并求解小圆的交点。

函数

创建小圆与椭圆

使用形状对象进行表示

aoicircle Define circular area of interest (自 R2024b 起)

用坐标表示

`ellipse1`	Geographic ellipse from center, semimajor axis, eccentricity, and azimuth
`scircle1`	Small circle from center and radius
`scircle2`	Small circle from center and point on perimeter
`gc2sc`	Center and radius of great circle
`scircleg`	Add small circle to `axesm`-based map using mouse

求交点

`gcxsc`	Intersection points for great and small circle pairs
`scxsc`	Intersection points for pairs of small circles

主题

Generate Small Circles
This example shows how to generate and display small circles.
Interactively Create Small Circle and Track Annotations on Maps
You can interactively generate geographic line annotations, such as navigational tracks and small circles.