"Surv"
, directly.
Class "matrix "
, directly.
Class "oldClass "
, by class "Surv", distance 2.
Class "structure "
, by class "matrix", distance 2.
Class "array "
, by class "matrix", distance 2.
Class "vector "
, by class "matrix", distance 3, with explicit coerce.
Class "vector "
, by class "matrix", distance 4, with explicit coerce.SurvS4
.