Scale data frame values to match growth targets over any series

ip_growth_transform(datatable, target, series_start = "value",
series_target = "growth", series_growth_over = "growth__over",
sep = " + ", growth_distance = 1)

## Arguments

datatable A data frame of values. A data frame of target growth rates over one or more dimensions. Should include an additional series to specify which series the growth are over. The name of the series in datatable to be compared to the target. The name of the target series containing growth rates. The name of the series in target specifying the series that are covered by the growth rates. Separator string to list multiple series in series_growth_over. Number of lags between observations when applying growth rates.

## Value

A data frame of target values for use in freeze_slice in ip_fit.