Plotting a set of given points to form a closed curve in matplotlib

Question

I have (tons of) coordinates of points for closed curve(s) sorted in x-increasing order.

When plot it in the regular way the result i get is this:

(circle

Answer 1

If you don't know how your points are set up (if you do I recommend you follow that order, it will be faster) you can use Convex Hull from scipy:

import matplotlib.pyplot as plt
from scipy.spatial import ConvexHull

# RANDOM DATA
x = np.random.normal(0,1,100)
y = np.random.normal(0,1,100)
xy = np.hstack((x[:,np.newaxis],y[:,np.newaxis]))

# PERFORM CONVEX HULL
hull = ConvexHull(xy)

# PLOT THE RESULTS
plt.scatter(x,y)
plt.plot(x[hull.vertices], y[hull.vertices])
plt.show()

, which in the example above results is this:

Notice this method will create a bounding box for your points.