Detect co-linear fixed effects and drop the last one
Usage
dropRedundantTerms(formula, data, tol = 0.001)
Arguments
- formula
original formula
- data
data.frame
- tol
tolerance to test difference of correlation from 1 or -1
Value
a formula, possibly with terms omitted.
Examples
# Valid formula
dropRedundantTerms(~ group + extra, sleep)
#> ~group + extra
#> <environment: 0x338b86cd8>
