A virtual class from which the "Intervals" and
  "Intervals_full" classes derive.
.Data:Object of class "matrix". A two-column, numeric (see below)
      format is required. For a valid object, no value in the first
      column may exceed its partner in the second column. (Note that
      this does permit empty interval rows, when both endpoints
      are of equal value and not both closed.) Only integral (though not
      "integer" class) endpoints are permitted if type is
      "Z". See the note on this point in documentation for
      "Intervals".
type:Object of class "character". A one-element character vector
      with either "Z" or "R" is required.
Class "matrix", from data part.
Class "array", by class "matrix", distance 2.
Class "structure", by class "matrix", distance 3.
Class "vector", by class "matrix", distance 4,
  with explicit coerce.
signature(x = "Intervals_virtual")
signature(x = "Intervals_virtual")
signature(x = "Intervals_virtual")
signature(from = "Intervals_virtual", to = "character")
signature(x = "Intervals_virtual")
signature(x = "Intervals_virtual")
signature(x = "Intervals_virtual")
signature(.Object = "Intervals_virtual")
signature(x = "Intervals_virtual")
signature(x = "Intervals_virtual", y = "Intervals_virtual")
signature(x = "Intervals_virtual")
signature(x = "Intervals_virtual")
signature(x = "Intervals_virtual")
signature(x = "Intervals_virtual")
signature(x = "Intervals_virtual")
signature(object = "Intervals_virtual")
signature(x = "Intervals_virtual")
signature(x = "Intervals_virtual")
signature(x = "Intervals_virtual")
signature(x = "Intervals_virtual")
signature(from = "numeric", to = "Intervals_virtual")
signature(from = "Intervals_virtual", to = "numeric")
signature(from = "Intervals_virtual", to = "Intervals_virtual")
See the "Intervals" and
  "Intervals_full" classes.