Extract total number of observations used in frontier models

This function extracts the total number of 'observations' from a fitted point frontier model.

Usage

# S3 method for class 'smfa'
nobs(object, ...)

Arguments

object

a smfa object for which the number of total observations is to be extracted.

...

Currently ignored.

Value

A single number, normally an integer.

Details

nobs gives the number of observations actually used by the estimation procedure.

See also

smfa, for the stochastic metafrontier analysis model fitting function using cross-sectional or pooled data