| 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 |
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)
José Pinheiro 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)