demprep: demprep: Prepare demographic data
In johnrbryant/demprep: Prepare Demographic Data

Description Calculate ages, periods, and cohorts from dates Cleaning existing labels Making labels complete and consistent Other tasks Example workflows

Prepare demographic data for subsequent analysis, focusing particularly on the specification of age groups, periods, and cohorts.

The following functions calculate ages, cohorts, and periods from dates.

age	period	cohort
`date_to_age_year`	`date_to_period_year`	`date_to_cohort_year`
`date_to_age_quarter`	`date_to_period_quarter`	`date_to_cohort_quarter`
`date_to_age_month`	`date_to_period_month`	`date_to_cohort_month`

demprep also has functions for calculating Lexis triangles from dates. See vignette("demprep") for a definition of Lexis triangles.

clean_age, clean_period, and clean_cohort convert existing age, period, and cohort labels to a standard design.

clean_age_df, clean_period_df clean_cohort_df, is_valid_age, is_valid_period, and is_valid_cohort can be used to control and check the cleaning-up process.

Labels can be consolidated, and gaps filled in, using the format functions:

age	period	cohort
`format_age_year`	`format_period_year`	`format_cohort_year`
`format_age_multi`	`format_period_multi`	`format_cohort_multi`
`format_age_custom`	`format_period_custom`	`format_cohort_custom`
`format_age_quarter`	`format_period_quarter`	`format_cohort_quarter`
`format_age_month`	`format_period_month`	`format_cohort_month`
`format_age_lifetab`
`format_age_births`

impute_date and impute_dob randomly generate in missing dates.

as_date_range_year, as_date_range_multi, as_date_range_custom, as_date_range_quarter, and as_date_range_month create non-standard but unambiguous period and cohort labels.

flip_to_start and flip_to_end help with reformatting one-year period and cohort labels.

Create 5-year age groups and 1-year periods from data with dates

date_to_age_year and date_to_period_year to calculate ages and periods
format_age_multi and format_period_year to create age and period labels

Create 5-year age groups, periods, and cohorts from data with existing age, period, and cohort labels.

clean_age and clean_period to tidy original labels
format_age_multi, format_period_multi, and format_cohort_multi to form 5-year age groups, periods, and cohorts