Description Usage Arguments Details Value See Also Examples

`loglm`

allows dimension numbers to be used in place of names in
the formula. `denumerate`

modifies such a formula into one that
`terms`

can process.

1 | ```
denumerate(x)
``` |

`x` |
A formula conforming to the conventions of |

The model fitting function `loglm`

fits log-linear models to
frequency data using iterative proportional scaling. To specify
the model the user must nominate the margins in the data that
remain fixed under the log-linear model. It is convenient to
allow the user to use dimension numbers, 1, 2, 3, ... for the
first, second, third, ..., margins in a similar way to variable
names. As the model formula has to be parsed by `terms`

, which
treats `1`

in a special way and requires parseable variable names,
these formulae have to be modified by giving genuine names for
these margin, or dimension numbers. `denumerate`

replaces these
numbers with names of a special form, namely `n`

is replaced by
`.vn`

. This allows `terms`

to parse the formula in the usual way.

A linear model formula like that presented, except that where
dimension numbers, say `n`

, have been used to specify fixed
margins these are replaced by names of the form `.vn`

which may
be processed by `terms`

.

1 2 | ```
denumerate(~(1+2+3)^3 + a/b)
## which gives ~ (.v1 + .v2 + .v3)^3 + a/b
``` |

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