#21Y002 self-teaching - encircling

brief description: encircling 

result:

sample code:

learned new techniques

the upper portion of the code is the same as ‘self-teaching #21Y001 scatter plot’. 

the difference is the new portion of function def ‘encircle’.

np.c[x,y] concatenates two lists, example below

np.c_[np.array([1,2,3]), np.array([4,5,6])] 

returns >>>>>> array([[1, 4], [2, 5], [3, 6]])

hull = ConvexHull(p)

“The convex hull of a set of points is defined as the smallest convex polygon, that encloses all of the points in the set.”

references:

https://docs.scipy.org/doc/scipy-0.14.0/reference/generated/scipy.spatial.ConvexHull.html
https://en.wikipedia.org/wiki/Convex_hull

https://link.springer.com/chapter/10.1007/978-3-319-26145-4_10