seg()
, ggbseg()
), what is the registration coverage implied by a given age range? Called by segCoverageFromYear()
and ggbsegCoverageFromYear()
. Here, the function simply takes the arithmetic mean of a given age range of $Cx
, as returned by segMakeColumns()
or ggbsegMakeColumns()
. Not intended for top-level use.segCoverageFromAges(codi, agesFit)
ggb()
ggbgetAgesFit
or user-supplied.