# Sequential Mosaics and Strucplots for an N-way Table

`seq_mosaic.Rd`

This function takes an n-way contingency table and plots mosaics for series of sequential models to the 1-, 2-, ... n-way marginal tables, corresponding to a variety of types of loglinear models.

## Usage

```
seq_mosaic(x, panel = mosaic,
type = c("joint", "conditional", "mutual", "markov", "saturated"),
plots = 1:nf, vorder = 1:nf,
k = NULL, ...)
```

## Arguments

- x
a contingency table in array form, with optional category labels specified in the dimnames(x) attribute, or else a data.frame in frequency form, with the frequency variable named

`"Freq"`

.- panel
a

`strucplot`

panel function, typically`mosaic`

or`sieve. NOT yet implemented.`

- type
type of sequential model to fit, a character string. One of

`"joint"`

,`"conditional"`

,`"mutual"`

,`"markov"`

, or`"saturated"`

.- plots
which marginal sub-tables to plot? A vector of a (sub)set of the integers,

`1:nf`

where`nf`

is the number of factors in the full n-way table.- vorder
order of variables, a permutation of the integers

`1:nf`

, used to reorder the variables in the original table for the purpose of fitting sequential marginal models.- k
conditioning variable(s) for

`type`

=`"joint"`

,`"conditional"`

or Markov chain order for`type`

=`"markov"`

- ...
other arguments passed to

`mosaic`

.

## Details

This function produces
similar plots to the use of `mosaic.loglmlist`

,
called with the result of `seq_loglm`

.

## References

These functions were inspired by the original SAS implementation of
mosaic displays, described in the *User's Guide for Mosaics*,
http://www.datavis.ca/mosaics/mosaics.pdf

## See also

`loglin-utilities`

for descriptions of sequential models,
`conditional`

,
`joint`

,
`mutual`

, ...

`loglmlist`

, `mosaic.loglmlist`

,
`seq_loglm`

`mosaic.glm`

, `mosaic`

,
`strucplot`

, for the many parameters that control the details of mosaic plots.

## Examples

```
data(Titanic, package="datasets")
seq_mosaic(Titanic) # models of joint independence, Survived last
seq_mosaic(Titanic, type="condit")
seq_mosaic(Titanic, type="mutual")
# other panel functions and options: presently BUGGED
if (FALSE) {
seq_mosaic(Titanic, type="mutual", panel=sieve,
gp=shading_Friendly, labeling=labeling_values)
}
```