elas.frontierQuad function

Elasticities of a Quadratic/Translog Frontier

Calculate the elasticities of a quadratic or translog frontier function.

## S3 method for class 'frontierQuad'
elas( object, data = NULL, dataLogged = TRUE,
   yObs = FALSE, ... )

Arguments

• object: object of class frontierQuad

  (returned by frontierQuad).

• data: dataframe containing the data; if it is not specified, the data frame that was used for the frontier estimation is used for calculating elasticities.

• dataLogged: logical. Are the variables (specified in arguments yName and xNames

  and available in argument data) already logged? (If argument dataLogged is TRUE, the frontier function is of the translog form; if argument dataLogged is FALSE, the frontier function is quadratic).

• yObs: logical. Use observed values of the endogenous variable. If FALSE (default) predicted values calculated by quadFuncCalc are used (ignored if argument dataLogged is TRUE).

• ``: currently ignored.

Details

This method internally calls the functions translogEla and quadFuncEla.

Returns

See documentation of translogEla and quadFuncEla.

See Also

frontierQuad, translogEla, and quadFuncEla.

Author(s)

Arne Henningsen

Examples

# example included in FRONTIER 4.1 (cross-section data)
   data( front41Data )
   front41Data$logOutput  <- log( front41Data$output )
   front41Data$logCapital <- log( front41Data$capital )
   front41Data$logLabour  <- log( front41Data$labour )

   translog <- frontierQuad( yName = "logOutput",
      xNames = c( "logCapital", "logLabour" ),
      data = front41Data )
   elas( translog )