quantityIndex: Calculate Quantity Indices

In micEconIndex: Price and Quantity Indices

Description

Calculates a Laspeyres, Paasche or Fisher Quantity index.

Usage

quantityIndex( prices, quantities, base, data, method = "Laspeyres",
   na.rm = FALSE, weights = FALSE )

Arguments

prices	Vector that contains the names of the prices.
quantities	Vector that contains the names of the quantities that belong to the prices.
base	The base period(s) to calculate the indices (see details).
data	Dataframe that contains the prices and quantities.
method	Which quantity index: "Laspeyres", "Paasche" or "Fisher".
na.rm	a logical value passed to 'mean()' when calculating the base.
weights	logical. Should an attribute 'weights' that contains the relatives weights of each quantity be added?

Details

The argument base can be either
(a) a single number: the row number of the base prices and quantities,
(b) a vector indicating several observations: The means of these observations are used as base prices and quantities, or
(c) a logical vector with the same length as the data: The means of the observations indicated as 'TRUE' are used as base prices and quantities.

If any values used for calculating the quantity index (e.g. current quantities, base quantities, current prices or base prices) are not available (NA), they are ignored (only) if they are multiplied by zero.

Value

a vector containing the quantity indices.

Author(s)

Arne Henningsen

See Also

quantityIndex.

Examples

   data( Missong03E7.7, package = "micEcon" )
   # Laspeyres Quantity Indices
   quantityIndex( c( "p.beef", "p.veal", "p.pork" ),
      c( "q.beef", "q.veal", "q.pork" ), 1, Missong03E7.7 )
   # Paasche Quantity Indices
   quantityIndex( c( "p.beef", "p.veal", "p.pork" ),
      c( "q.beef", "q.veal", "q.pork" ), 1, Missong03E7.7, "Paasche" )

   data( Bleymueller79E25.1, package = "micEcon" )
   # Laspeyres Quantity Indices
   quantityIndex( c( "p.A", "p.B", "p.C", "p.D" ), c("q.A", "q.B", "q.C", "q.D" ),
      1, Bleymueller79E25.1 )
   # Paasche Quantity Indices
   quantityIndex( c( "p.A", "p.B", "p.C", "p.D" ), c("q.A", "q.B", "q.C", "q.D" ),
      1, Bleymueller79E25.1, "Paasche" )

Example output

     1986      1987      1988      1989 
1.0000000 0.9706006 0.8833432 0.7429413 
     1986      1987      1988      1989 
1.0000000 0.9705765 0.8833112 0.7427030 
    1970     1974     1978 
1.000000 1.215385 1.546154 
    1970     1974     1978 
1.000000 1.132931 1.474185 

micEconIndex documentation built on May 2, 2019, 5:22 p.m.