Find the union of two collections of objects
union(x, y, ...)# S3 method for default
union(x, y, ...)
# S3 method for neuronlist
union(x, y, ...)
the first collection to consider.
the second collection to consider.
additional arguments passed to methods
A collection of the same mode as x that contains all unique
elements of x and y.
Note that union.default calls base::union to ensure consistent behaviour for regular vectors.