Change in an indicator between two periods, where both are reliable

Joins the cells of two periods from calc_period_indicators() and keeps those with n >= esn in both, so ES(n) is defined on each side. Also reports how coverage changed (cells reliable only in one period).

Usage

calc_period_change(df, from, to, esn = 50L, indicator = c("es", "sp"))

Arguments

df

output of calc_period_indicators().

from, to

the two period values to compare.

esn

reliability floor on n (default 50, the ES(50) floor).

indicator

which indicator to difference ("es" or "sp").

Value

list with cells (cell, value_from, value_to, delta, pct, n_from, n_to) and coverage (counts of cells reliable in both / only from / only to).