city_data               city data example
cl.analysis             Cluster analusis
cl.features             Clustering features
cl.plot                 Clustering model plotting
cl.summary              Extract the proposed clustering method and the
                        number of clusters from clvalid method
convex.hulls            Convex hull points
ellipses                Ellipse points
nums                    Select the numeric columns of a given dataset
open_spending.cl        Read and Calculate the Basic Information for
                        Cluster Analysis Tasks from Open Spending API
