silhouette_Octave

Code MATLAB's silhouette function into Octave

Usage:

• si = silhouette(X, clust)
• si = silhouette(X, clust, metric);

-- update log 20161117 --

• Add 'Euclidean' distance
• Add 'sqEuclidean' distance and set it default
• Renew usage

-- update log 20161116 ---

• The first version
• Can calculate silhouette values
• Only 'cosine' distance can be calculated
• Cannot plot