Derive nax from nqx and nMx.

Source: R/lt_id.R

This is the standard identity to derive nax from nqx and nMx.

lt_id_qm_a(nqx, nMx, AgeInt)

Arguments

nqx

numeric. Vector of age specific death probabilities.
nMx

numeric. Vector of age-specific death rates.
AgeInt

integer. Vector of age class widths.

Value

nax numeric vector of average time spent in interval by those dying in interval via identity.

References

Preston S, Heuveline P, Guillot M (2000). Demography: measuring and modeling population processes. Wiley-Blackwell.