find_peak: Find the peak date of an incidence curve

In i2extras: Functions to Work with 'incidence2' Objects

Find the peak date of an incidence curve

Description

This function can be used to find the peak of an epidemic curve stored as an ⁠[incidence2]⁠ object.

Usage

find_peak(x, complete_dates = TRUE, ...)

Arguments

x	⁠<incidence2>⁠ object.
complete_dates	⁠[bool]⁠ Should complete_dates() be called on the data prior to keeping the first entries. Defaults to TRUE.
...	Other arguments passed to complete_dates().

Value

An ⁠[incidence2]⁠ object the date of the (first) highest incidence in the data along with the count. If x is grouped object then the output will have the peak calculated for each grouping.

See Also

estimate_peak() for bootstrap estimates of the peak time.

Examples

if (requireNamespace("outbreaks", quietly = TRUE)) {
  # load data and create incidence
  data(fluH7N9_china_2013, package = "outbreaks")
  i <- incidence(fluH7N9_china_2013, date_index = "date_of_onset")
  find_peak(i)
}

i2extras documentation built on March 31, 2023, 5:23 p.m.