Documentation for multivariate time series

[ggrothendieck]

Based on looking at the code pdcDist works for multivariate time series if X is a 3d array but the documentation only refers to the univariate case where X is a matrix. Suggest making documentation consistent with code and providing an example of its use with multivariate time series. Also couldn't find how the distance between two univariate series is extended to handle multivariate.

Also the jstatsoft paper refers to using the likelihood ratio to determine the number of clusters. If this is implemented suggest documenting how to get the number of clusters using the package. If t his has not been implemented it would be a useful addition.

[brandmaier]

Thanks, @ggrothendieck for pointing this out. It is correct that the documentation for using 3d arrays is only in the Rd file for pdclust but not in pdcDist. Here is a new vignette that demonstrates usage of multivariate time series:
https://brandmaier.github.io/pdc/articles/Multivariate.html

[brandmaier]

The hypothesis test is implemented in `hypothesis.test.R" but not exposed to public because it lacks a proper interface. I will keep this issue open as a reminder to implement this.