is.ratetable(x, verbose=F)
x
| the object to be verified. |
verbose
|
If TRUE and the object is not a ratetable, then return a
character string describing the way(s) in which x fails to be
a proper ratetable object.
|
ratetable
. The function
verifies not only the class
attribute, but the structure of the
object.TRUE
if x
is a ratetable, and FALSE
or a
description if it is not. 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.pyears
, survexp