The S3 method stack allow to stack a
MarkerList object into a data.frame, which
may be a more convenient format to handle, depending on
the computation one wants to perform.
The method unstack performs the reverse operation
of stack.
S3 (MarkerList) `stack`(x, ...) S3 (stackedMarkerList) `unstack`(x, ...)
MarkerList object for
stack, a data.frame as returned by
stack for unstack.