for data: [[ 0. 1. ] [ 1. 0.1] [ 0.9 1. ] [ 0.7 0.6]] with "means": [[ 0. 0.1 ] [ 0.95 1. ]] the indices are : [[0] [1] [1] [1]] and each point is this distance from the mean of its cluster: [[ 0.9 ] [ 0.90138782] [ 0.05 ] [ 0.47169906]]