Verify that an object is of class ratetable.
The function verifies not only the class attribute, but the
structure of the object.
is.ratetable(x, verbose=FALSE)
x |
the object to be verified. |
verbose |
if |
Rate tables are used by the pyears and survexp functions, and normally
contain death rates for some population, categorized by age, sex, or other
variables. They have a fairly rigid structure, and the verbose option
can help in creating a new rate table.
returns TRUE if x is a ratetable, and FALSE or a description if it is not.
is.ratetable(survexp.us) # True is.ratetable(lung) # False
Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.