mlogit-deprecated function

Some deprecated functions, especially mlogit.data, index and mFormula

mlogit.data is deprecated, use dfidx::dfidx() instead, mFormula is replaced by Formula::Formula() and zoo::index()

by idx.

mlogit.data(
  data,
  choice = NULL,
  shape = c("long", "wide"),
  varying = NULL,
  sep = ".",
  alt.var = NULL,
  chid.var = NULL,
  alt.levels = NULL,
  id.var = NULL,
  group.var = NULL,
  opposite = NULL,
  drop.index = FALSE,
  ranked = FALSE,
  subset = NULL,
  ...
)

mFormula(object)

## S3 method for class 'formula'
mFormula(object)

## Default S3 method:
mFormula(object)

## S3 method for class 'mFormula'
model.matrix(object, data, ...)

is.mFormula(object)

## S3 method for class 'dfidx'
index(x, ...)

## S3 method for class 'mlogit'
index(x, ...)

Arguments

• data: a data.frame,

• choice: the variable indicating the choice made: it can be either a logical vector, a numerical vector with 0 where the alternative is not chosen, a factor with level 'yes' when the alternative is chosen

• shape: the shape of the data.frame: whether long if each row is an alternative or wide if each row is an observation,

• varying: the indexes of the variables that are alternative specific,

• sep: the seperator of the variable name and the alternative name (only relevant for a wide data.frame),

• alt.var: the name of the variable that contains the alternative index (for a long data.frame only) or the name under which the alternative index will be stored (the default name is alt),

• chid.var: the name of the variable that contains the choice index or the name under which the choice index will be stored,

• alt.levels: the name of the alternatives: if null, for a wide data.frame, they are guessed from the variable names and the choice variable (both should be the same), for a long

  data.frame, they are guessed from the alt.var argument,

• id.var: the name of the variable that contains the individual index if any,

• group.var: the name of the variable that contains the group index if any,

• opposite: returns the opposite of the specified variables,

• drop.index: should the index variables be dropped from the data.frame,

• ranked: a logical value which is true if the response is a rank,

• subset: a logical expression which defines the subset of observations to be selected,

• ...: further arguments passed to reshape.

• x, object: a formula, a dfidx or a mlogit object,

• drop: a boolean, equal to FALSE if one wants that a data.frame is always returned,

Returns

mlogit.data now returns a dfidx object, mFormula

simply calls Formula::Formula() and returns a Formula

object.

See Also

stats::reshape()

Author(s)

Yves Croissant