init clustering
update README.md
add test for time
update clustering
add scale for clustering
update README
update README
add hypot and distance in clustering
基于 k-means 的第一次尝试
update README
update README
update README
fix bugs in hypot
add clustering/display
clusters/calc
resize image & add two more tests
get cluster center from orginal points, fixes #16
这个中心点没有任何接近的值，从原图中随机找一个点，fixes #15
new clustering wrapper
hide canvas