Feature Request: $cluster and $centers should be added to the result

[MovGP0]

When using a clustering function like kmeans or dbscan::dbscan, the result data frame will have $cluster and $centers attributes. These attributes are currently missing from the result and should be added, such that the same functions can be used for analyzing and plotting the clustering result.

[MovGP0]

correction: $cluster information is available. it is just called $class. Documentation is missing.

[MovGP0]

correction: centers are also available. they are called $Mu. the row is the cluster ($Mu[1,] is the first cluster) and the columns is the position in the cluster (ie. $Mu[1,1] is the first measurement of the cluster).

The headers of $Mu should be renamed to the headers of the original data, such that it is easier to correlate them.