search for: fac2_1

Dear list, I am trying to impute the two level data, I have a question about a warning. Could you give me some suggestions please? Thank you very much. Here is my code and output of mice package: > ini <- mice(try, maxit=0) > pred=ini$pred > pred FAC1_1 FAC2_1 FAC3_1 FAC4_1 FAC5_1 FAC6_1 FAC7_1 FAC8_1 FAC9_1 FAC10_1 ClassSize_1 ClassSize_2 ClassSize_3 intercept TeacherID_1 bulg_1 bulg_2 FAC1_1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 FAC2_1...

Hi everyone I am using box.tidwell to transform the explanatory variables. However, it appears problematic. The warning I received as follows. box.tidwell(Newresponse ~ FAC2_1 + FAC4_1 + FAC5_1 + FAC6_1 + FAC7_1 + KXI + RECODINC) Warning in log(x) : NaNs produced Warning in lm.fit(x, y, offset = offset, singular.ok = singular.ok, ...) : extra arguments na.rm are just disregarded. Error in lm.fit(x, y, offset = offset, singular.ok = singular.ok, ...) :...