twoway: Analysis of a two-way table with one observation per cell
In twoway: Analysis of Two-Way Tables

Description Usage Arguments Details Value Author(s) References See Also Examples

Fits an additive model using either row and column means or Tukey's median polish procedure

twoway(x, ...)

## Default S3 method:
twoway(x, method = c("mean", "median"), ...,
  name = deparse(substitute(x)), responseName = attr(x, "response"),
  varNames = names(dimnames(x)))

`x`	a numeric matrix or data frame.
`...`	other arguments passed down
`method`	one of `"mean"` or `"median"`
`name`	name for the input dataset
`responseName`	name for the response variable
`varNames`	names for the Row and Column variables

The rownames(x) are used as the levels of the row factor and the colnames(x) are the levels of the column factor. For a numeric matrix, the function uses the names(dimnames(x)) as the names of these variables, and, if present, a responseName attribute as the name for the response variable.

An object of class c("twoway") with the following named components:

overall: the fitted constant term.
roweff: the fitted row effects.
coleff: the fitted column effects.
residuals: the residuals.
name: the name of the dataset.
rownames: the names for the rows
colnames: the names for the columns
method: the fitting method
varNames: the names of the row and column variables
responseName: the name of the response variable
compValue: the comparison values, for the diagnostic plot
slope: the slope value, for the diagnostic plot
power: the suggested power transformation, 1-slope

An object of class "twoway", but supplemented by additional components used for labeling

Michael Friendly

Tukey, J. W. (1977). Exploratory Data Analysis, Reading MA: Addison-Wesley. Friendly, M. (1991). SAS System for Statistical Graphics Cary, NC: SAS Institute

codetwoway.formula, codemedpolish

medianfit, meanfit