asTable {nlme} | R Documentation |

## Convert groupedData to a matrix

### Description

Create a tabular representation of the response in a balanced
groupedData object.

### Usage

asTable(object)

### Arguments

`object` |
A balanced `groupedData` object |

### Details

A balanced groupedData object can be represented as a matrix or table
of response values corresponding to the values of a primary covariate
for each level of a grouping factor. This function creates such a
matrix representation of the data in `object`

.

### Value

A matrix. The data in the matrix are the values of the response. The
columns correspond to the distinct values of the primary covariate and
are labelled as such. The rows correspond to the distinct levels of
the grouping factor and are labelled as such.

### Author(s)

Jose Pinheiro Jose.Pinheiro@pharma.novartis.com and Douglas Bates bates@stat.wisc.edu

### References

Pinheiro, J. C. and Bates, D. M. (2000), *Mixed-Effects Models in S
and S-PLUS*, Springer, New York.

### See Also

`groupedData`

, `isBalanced`

,
`balancedGrouped`

### Examples

asTable(Orthodont)
# Pinheiro and Bates, p. 109
ergoStool.mat <- asTable(ergoStool)

[Package

*nlme* version 3.1-80

Index]