rpar function

random parameter objects

rpar objects contain the relevant information about estimated random parameters. The homonymous function extract on rpar object from a mlogit object.

rpar(x, par = NULL, norm = NULL, ...)

## S3 method for class 'rpar'
print(
  x,
  digits = max(3, getOption("digits") - 2),
  width = getOption("width"),
  ...
)

## S3 method for class 'rpar'
summary(object, ...)

Arguments

• x, object: a mlogit object,
• par: the name or the index of the parameters to be extracted ; if NULL, all the parameters are selected,
• norm: the coefficient used for normalization if any,
• ...: further arguments.
• digits: the number of digits
• width: the width of the printed output

Returns

a rpar object, which contains:

• dist: the name of the distribution,
• mean: the first parameter of the distribution,
• sigma: the second parameter of the distribution,
• name: the name of the parameter.

Details

mlogit objects contain an element called rpar which contain a list of rpar objects, one for each estimated random parameter. The print method prints the name of the distribution and the parameter, the summary behave like the one for numeric vectors.

See Also

mlogit() for the estimation of a random parameters logit model.

Author(s)

Yves Croissant