createDesMat {alphaOutlier} | R Documentation |
This function creates a design matrix for contingency tables and is particularly useful for log-linear Poisson models. It uses effect coding of the variables: First the rows of the contingency table from top to bottom, then the columns from left to right.
createDesMat(n, p)
n |
Number of rows of the corresponding contingency table. |
p |
Number of columns of the corresponding contingency table. |
A (n+p-1) times (n*p) design matrix.
A. Rehage
Kuhnt, S.; Rapallo, F.; Rehage, A. (2014) Outlier detection in contingency tables based on minimal patterns. Statistics and Computing 24 (3), 481-491.
createDesMat(3, 5)