Using underlying ndarray methods

[Adverbly]

I am interested in using ndarray#pick, which from what I have seen has no equivalent in this library: http://scijs.net/packages/#scijs/ndarray.

Problem is when I call pick, I get an ndarray rather than an nj.NdArray.

Am I missing something or is there no equivalent for pick? Assuming that there is no equivalent, is there an easy way for me to construct a new NdArray from the ndarray that is returned?