简单实现平面的点K均值分析，使用欧几里得距离，并用pylab展示。
代码如下:
import pylab as pl
#calc Euclid squire
def calc_e_squire(a, b):
return (a[0]- b[0]) ** 2 + (a[1] - b[1]) **2
#init the 20 point
a = [2,4,3,6,7,8,2,3,5,6,12,10,15,16,11,10,19,17,16,13]
b = [5,6,1,4,2,4,3,1,7,9,16,11,19,12,15,14,11,14,11,19]
#define two k_value
k1 = [6,3]
k2 = [6,1]
#defint tow cluster
sse_k1 = []
sse_k2 = []
while True:
sse_k1 = []
sse_k2 = []
for i in range(20):
e_squire1 = calc_e_squire(k1, [a[i], b[i]])
e_squire2 = calc_e_squire(k2, [a[i], b[i]])
if (e_squire1