Create a start event column.

Source: R/utils.R

Create a new column which marks the beginning of each series in a tibble (for example, time series).

create_start_event(tibble, series_col)

Arguments

tibble

A tibble arranged according to the series.
series_col

The name of the column that defines the group of series, as an unquoted expression.

Value

A tibble with an extra column that marks the beginning of the series.

Examples

library(dplyr)

#> 
#> Attaching package: ‘dplyr’
#> The following objects are masked from ‘package:stats’:
#> 
#>     filter, lag
#> The following objects are masked from ‘package:base’:
#> 
#>     intersect, setdiff, setequal, union
series_tbl <- tibble(
  time_series = rep(1:5, 3),
  group = rep(c("a", "b", "c"), each = 5)
) %>%
  create_start_event(group)