中文说明：K的简单代码意味着带剪影的。此代码作为起点与PCA技术一起提供。绘制数据后，可以找到数据中存在的簇（或不同类）的数量。剪影是一种检查簇数假设的方法，即1个良好的指定，0个观测值可能属于另一个簇，1个错误的指定属于该簇。
English Description：
Straightforward code for K means++ with Silhouette. This code accompanies PCA tehnique, as being a starting point. After ploting the data one can fiind the number of clusters( or different classes) present in data. Silhouette is a methode of checking the assumption of the number of clusters, that is 1 good designation, 0 the observation can be belong to another cluster and -1 a wrong designation to the cluster. The designation to a cluster is done by minimizing distances to cluster centroid.