isNested: Is f1 nested within f2?

In lme4/lme4: Linear Mixed-Effects Models using 'Eigen' and S4

Is f1 nested within f2?

Description

Does every level of f1 occur in conjunction with exactly one level of f2? The function is based on converting a triplet sparse matrix to a compressed column-oriented form in which the nesting can be quickly evaluated.

Usage

  isNested(f1, f2)

Arguments

f1	factor 1
f2	factor 2

Value

TRUE if factor 1 is nested within factor 2

Examples

with(Pastes, isNested(cask, batch))   ## => FALSE
with(Pastes, isNested(sample, batch))  ## => TRUE

lme4/lme4 documentation built on April 19, 2024, 10:30 a.m.