Function for generating the n-period rolling geometric growth rate.
geogr(x, n = 1)
The time series for the growth rate to be calculated.
The period for the growth to be calculated over.
In order to ensure the growth rate calculated is reliable, the following rule are applied.
50% of the data must be present.
The length of the time series must be greater than n
Otherwise the growth will not be computed.
The n-period geometric growth rate of the time series.
1 2 3 4