CoverMarginsExact: Extract two sets of model terms that cover two formulas

In olangsrud/experimentalRpackage: An experimental R package containing experimental/early R functions

Description

One formula for cells to be perturbed and one formula for cells to be exact

Usage

CoverMarginsExact(
  data,
  formula,
  formulaExact = NULL,
  intercept = FALSE,
  interceptExact = !is.null(formulaExact),
  coverMargins = TRUE
)

Arguments

data	Input data as a data frame (inner cells)
formula	Model formula defining cells to be perturbed
formulaExact	Model formula defining cells to be exact
intercept	Whether to include intercept
interceptExact	Whether to include intercept
coverMargins	Whether to extract only the covering terms

Details

The function make use of CoverMargins. Thus, hierarchical relationships seen in the data is considered. Each output element can be input to Terms2formula.

Value

List of two sets of model terms

Author(s)

Øyvind Langsrud

Examples

z3 <- EasyData("z3")
CoverMarginsExact(z3, ~region + kostragr * hovedint)
CoverMarginsExact(z3, ~region + kostragr * hovedint * mnd, ~kostragr * hovedint)
CoverMarginsExact(z3, ~region + kostragr * hovedint * mnd, ~kostragr * hovedint + mnd)
CoverMarginsExact(z3, ~region, ~kostragr * hovedint, TRUE, FALSE)
CoverMarginsExact(z3, ~region * mnd, ~kostragr * hovedint, coverMargins = FALSE)
CoverMarginsExact(z3, ~region, interceptExact = TRUE)  

olangsrud/experimentalRpackage documentation built on Sept. 20, 2021, 10:32 p.m.