Filters the input dataset to return the most recent release (or vintage)
for each time period.
Arguments
- df
A data frame containing data vintages. The data frame must include
the columns pub_date (publication date of the release) and
time (the corresponding time period for the data).
Value
A filtered data frame containing only the most recent release(s).
The resulting data frame is assigned the class tbl_release to indicate
its structure.
Details
For each time period, the function identifies the release with the latest
publication date (pub_date) and adds a column release that labels the
release as release_N, where N is the release index (zero indexed).
Examples
# Example data
df <- dplyr::filter(reviser::gdp, id=="US")
# Get the latest release for each time period
latest_release <- get_latest_release(df)
