WARNING IT CHANGES INTERCEPT IN ORGINAL MLMData

[chenhz1223]

Should mlm(data, addXIntercept = true) modify original data by adding an intercept?

[GregFa]

No, mlm(data, addXintercept=true) should not mutate data.
Now (v0.3.0), it adds the intercept to the design matrix it builds internally (or to a copy), not to the caller’s object.