Add zeros to data set that are implied by a '0' reported at a coarser timescale.
Arguments
- data
A tidy data set with the following minimal set of columns:
disease, nesting_disease, year, original_dataset_id, iso_3166_2,
basal_disease, time_scale, period_start_date, period_end_date,
period_mid_date, days_this_period, dataset_id
Value
A tidy data set with inferred 0s.