refine_window: Refine a Window given subsequent periods and difference in...
In dereksonderegger/WindowRefine: Narrow down a time period

Description Usage Arguments Examples

View source: R/refine_window.R

In some censured data cases, we are given only the month or quarter that two sequential observations are given, but we know the number of days between the observations. Suppose we know that the first observation was in January, the second was in February and that the measurements were 10 days apart. Then we KNOW the first measurement was between Jan 21st and Jan 31 as the earliest the second could have occurred is February 1st.

1	refine_window(window, obs_periods, obs_deltas, period_df)

`window`	The window for the first observation without and other constraints.
`obs_periods`	The period labels for subsequent observations. For example the month name, or "Q1 2020". These labels need to correspond to labels in the 'period_df' parameter.
`obs_deltas`	The number of days between the first observation and the nth observation.
`period_df`	A data frame with columns 'interval' and 'label' where the interval is a 'lubridate::interval' object and label is a character string corresponding to values in the 'obs_periods' parameter.

period_df <- make_intervals(
  ymd('2020-1-1', '2020-1-11', '2020-1-21', '2020-1-31'),
  labels = c('P1','P2','P3'))
window = period_df$interval[1]
obs_periods = c('P2', 'P3')
obs_deltas  = c(5, 23)

refine_window(window, obs_periods, obs_deltas, period_df)