VGAM (version 0.9-6)

Rcim: Mark the Baseline of Row and Column on a Matrix data

Description

Rearrange the rows and columns of the input so that the first row and first column are baseline. This function is for rank-zero row-column interaction models (RCIMs; i.e., general main effects models).

Usage

Rcim(mat, rbaseline = 1, cbaseline = 1)

Arguments

mat

Matrix, of dimension $r$ by $c$. It is best that it is labelled with row and column names.

rbaseline, cbaseline

Numeric (row number of the matrix mat) or character (matching a row name of mat) that the user wants as the row baseline or reference level. Similarly cbaseline for the column.

Value

• Matrix of the same dimension as the input, with rbaseline and cbaseline specifying the first rows and columns. The default is no change in mat.

Details

This is a data preprocessing function for rcim. For rank-zero row-column interaction models this function establishes the baseline (or reference) levels of the matrix response with respect to the row and columns---these become the new first row and column.

See Also

moffset, rcim, plotrcim0.

Examples

(alcoff.e <- moffset(alcoff, roffset = "6", postfix = "*"))
(aa <- Rcim(alcoff,    rbaseline = "11", cbaseline = "Sun"))
(bb <- moffset(alcoff,             "11",             "Sun", postfix = "*"))
aa - bb  # Note the difference!