ofn-enclosing-circle

[Ofnuts]

The addition is really meant to include things that are already split over several paths (text, or the British Isles above, which is a couple hundred paths).

You can prove that the smallest circle is either:

• defined by two of the given points and these two points are the end of a diameter
  
• defined by three of the given points, and the circle is the circumcircle of the triangle
  

So if you have only a few pojnts, there are more direct ways (ofn-path-to-shape can draw the circle that goes through three points)