Resample the series based on equivalence class on the keys. A specified function `keyProj` is used to project keys to another space and the observations for which the projected keys are equivalent are grouped into chunks. The chunks are then transformed to values using the provided function `f`. ## Parameters - `series` - An input series to be resampled - `keyProj` - A function that transforms keys from original space to a new space (which is then used for grouping based on equivalence) - `aggregate` - A function that is used to collapse a generated chunk into a single value. ## Remarks This operation is only supported on ordered series. The method throws `InvalidOperationException` when the series is not ordered. For unordered series, similar functionality can be implemented using `GroupBy`. [category:Lookup, resampling and scaling]

public static Series<a, b> ResampleEquivalence<K, V, a, b>(
	this Series<K, V> series,
	Func<K, a> keyProj,
	Func<Series<K, V>, b> aggregate
)