This function calculates the number of events of collective motion in a dataset.
events_n(data)
an integer with the number of events of collective motion (sequences
of keep == TRUE
).
A dataframe with a keep
column (representing which rows
are defined as events of collective motion) and a set
column.
Marina Papadopoulou m.papadopoulou.rug@gmail.com
define_events
data <- data.frame(
set = c(rep('1', 50), rep('2', 50)),
keep = c(rep(FALSE, 10), rep(TRUE, 70), rep(FALSE, 20))
)
events_n(data) ## 2 events
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