在Matlab中查找轮廓方程

Question

我有一个由Matlab生成的等高线图。我想知道等高线函数画出的一条等高线的方程式。

有简单的方法吗？

谢谢。

附言：我是新来的，所以网站没有让我附上一个图片文件，说我需要足够的声誉来发布图片！

Answer 1

来自doc contour:

[C,H] = CONTOUR(...) returns contour matrix C as described in CONTOURC
and a handle H to a contourgroup object.  This handle can be used as
input to CLABEL.

和来自contourc:

The contour matrix C is a two row matrix of contour lines. Each
contiguous drawing segment contains the value of the contour, 
the number of (x,y) drawing pairs, and the pairs themselves.  
The segments are appended end-to-end as
    C = [level1 x1 x2 x3 ... level2 x2 x2 x3 ...;
         pairs1 y1 y2 y3 ... pairs2 y2 y2 y3 ...]