search for: formulaobject

Displaying 1 result from an estimated 1 matches for "formulaobject".

2012 Jan 22
1
How to construct a formula
...y.Date, data, na.action="na.exclude", method="REML") } else { model=lme(test_variable~Genotype + Weight + Gender, random=~1|Assay.Date, data, na.action="na.exclude", method="REML") } } else { .... etc What I want to do: formulaObject = test_variable~Genotype if(weight_significant) { formulaObject = formulaObject + Weight; } if(gender_significant) { formulaObject = formulaObject + Gender; } if(weight_gender_interaction_significant) { formulaObject = formulaObject + Weight*Gender; } model=lme(formulaObject, rando...