Convert groupedData to a matrix
Create a tabular representation of the response in a balanced groupedData object.
asTable(object)
object |
A balanced |
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.
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.
José Pinheiro and Douglas Bates bates@stat.wisc.edu
Pinheiro, J. C. and Bates, D. M. (2000), Mixed-Effects Models in S and S-PLUS, Springer, New York.
asTable(Orthodont) # Pinheiro and Bates, p. 109 ergoStool.mat <- asTable(ergoStool)
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