## Median Polish of a Matrix

## Usage

    medpolish(x, eps=0.01, maxiter=10)

    plot(medpolish.obj)
    print(medpolish.obj)

## Description

`medpolish` fits an additive constant-plus-rows-plus-columns model to the values given in `x` using Tukey's median polish procedure.

Sweeping out for row and column effects continues until the proportional reduction in the sum of absolute residuals is less than `eps` or until the have been `maxiter` iterations. The sum of absolute residuals is printed at each iteration of the fitting process.

The value returned by `medpolish` is an object of class `medpolish`. Printing and plotting methods are defined for this class, and can be invoked via the generic functions `print` and `plot`.

## Value

An object of class `medpolish` with the following named components:

`overall` | the fitted constant term.
`row` | the fitted row effects.
`col` | the fitted column effects.
`residuals` | the residuals.
`name` | the name of the dataset.

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