formula function

Formula from an smn.lmm and smsn.lmm models

It returns the formula used for both fixed and random terms of the linear mixed model represented by object.

## S3 method for class 'SMN'
formula(x, ...)
## S3 method for class 'SMSN'
formula(x, ...)

Arguments

• x: An object inheriting from class SMN or SMSN
• ...: Additional arguments

Returns

• formFixed: Fixed effects formula

• formRandom: Random effects formula

• groupVar: Variable identified subjects or clusters

See Also

smn.lmm, smsn.lmm, criteria

Examples

fm1 = smn.lmm(distance ~ age+Sex, data=nlme::Orthodont, groupVar="Subject")
formula(fm1)