Rebin a population table to a set of age groups

Rebins a population table to the coarser age groups defined by age_limits, summing populations into each group. Errors if age_limits are finer than the population data, since splitting a band would require assuming a within-band age distribution. Operates on an age column of age-group labels (e.g. from limits_to_agegroups() or assign_age_groups()) and returns the same form.

To align a population to a contact matrix's groupings for the post-processing functions, use align_ages() instead.

Usage

rebin_ages(pop, age_limits)

Arguments

pop: a data frame with an age column of age-group labels and a population column
age_limits: lower age limits of the (coarser) age groups to rebin to

Value

a data frame with an age column of age-group labels and a population column

Examples

it_pop <- data.frame(
  age = limits_to_agegroups(seq(0, 80, by = 5), notation = "brackets"),
  population = c(rep(2.5e6, 4), rep(3.5e6, 4), rep(5e6, 6), 5e6, 7e6, 4e6)
)
# rebin into 10-year age groups
rebin_ages(it_pop, age_limits = seq(0, 100, by = 10))
#>        age population
#> 1   [0,10)    5.0e+06
#> 2  [10,20)    5.0e+06
#> 3  [20,30)    7.0e+06
#> 4  [30,40)    7.0e+06
#> 5  [40,50)    1.0e+07
#> 6  [50,60)    1.0e+07
#> 7  [60,70)    1.0e+07
#> 8  [70,80)    1.2e+07
#> 9 [80,Inf)    4.0e+06