View source: R/f_bilateral_indices.R
lehr | R Documentation |
This function returns a value (or vector of values) of the bilateral Lehr price index.
lehr(data, start, end, interval = FALSE)
data |
The user's data frame with information about sold products. It must contain columns: |
start |
The base period (as character) limited to the year and month, e.g. "2020-03". |
end |
The research period (as character) limited to the year and month, e.g. "2020-04". |
interval |
A logical value indicating whether the function is to compare the research period defined by |
The function returns a value (or vector of values) of the bilateral Lehr price index depending on the interval
parameter. If the interval
parameter is set to TRUE, the function returns a vector of price index values without dates. To get information about both price index values and corresponding dates, please see functions: price_indices
or final_index
. The function does not take into account aggregating over outlets or product subgroups (to consider these types of aggregating, please use the final_index
function).
Lehr, J. (1885). Beitrage zur Statistik der Preise, insbesondere des Geldes und des Holzes. J. D. Sauerlander, Frankfurt am Main.
(2004). Consumer Price Index Manual. Theory and practice. ILO/IMF/OECD/UNECE/Eurostat/The World Bank, International Labour Office (ILO), Geneva.
lehr(sugar, start="2018-12", end="2019-12")
lehr(milk, start="2018-12", end="2020-01", interval=TRUE)
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