It looks like NDataSeries<T>.FillFromEnumerable calls Reset on its argument.
The IEnumerable object returned by System.Linq.Enumerable.Select (and possibly other Linq methods) does not implement Reset, and throws NotImplementedException.

To reproduce:
new NDataSeriesDouble().FillFromEnumerable(new double[] { 0, 1 }.Select(x => x));

Expected behavior: Fills the series with the values 0 and 1.
Observed behavior: Throws NotImplementedException.