nlme (version 3.1-86)

model.matrix.reStruct: reStruct Model Matrix

Description

The model matrices for each element of formula(object), calculated using data, are bound together column-wise. When multiple grouping levels are present (i.e. when length(object) > 1), the individual model matrices are combined from innermost (at the leftmost position) to outermost (at the rightmost position).

Usage

## S3 method for class 'reStruct':
model.matrix(object, data, contrast, \dots)

Value

a matrix obtained by binding together, column-wise, the model matrices for each element of formula(object).

See Also

model.matrix, contrasts, reStruct, formula.reStruct

Examples

rs1 <- reStruct(list(Dog = ~day, Side = ~1), data = Pixel)
model.matrix(rs1, Pixel)