Name formula list elements
This helper function names any unnamed elements in the formula
list. This is a convenience function.
name.formulas(formulas, prefix = "F")
formulas |
A named list of formula's, or expressions that
can be converted into formula's by |
prefix |
A character vector of length 1 with the prefix to be using for naming any unnamed blocks with two or more variables. |
This function will name any unnamed list elements specified in
the optional argument formula. Unnamed formula's
consisting with just one response variable will be named
after this variable. Unnamed formula's containing more
than one variable will be named by the prefix
argument, padded by an integer sequence stating at 1.
Named list of formulas
# fully conditionally specified main effects model form1 <- list( bmi ~ age + chl + hyp, hyp ~ age + bmi + chl, chl ~ age + bmi + hyp ) form1 <- name.formulas(form1) imp1 <- mice(nhanes, formulas = form1, print = FALSE, m = 1, seed = 12199) # same model using dot notation form2 <- list(bmi ~ ., hyp ~ ., chl ~ .) form2 <- name.formulas(form2) imp2 <- mice(nhanes, formulas = form2, print = FALSE, m = 1, seed = 12199) identical(complete(imp1), complete(imp2)) # same model using repeated multivariate imputation form3 <- name.blocks(list(all = bmi + hyp + chl ~ .)) imp3 <- mice(nhanes, formulas = form3, print = FALSE, m = 1, seed = 12199) cmp3 <- complete(imp3) identical(complete(imp1), complete(imp3)) # same model using predictorMatrix imp4 <- mice(nhanes, print = FALSE, m = 1, seed = 12199, auxiliary = TRUE) identical(complete(imp1), complete(imp4)) # different model: multivariate imputation for chl and bmi form5 <- list(chl + bmi ~ ., hyp ~ bmi + age) form5 <- name.formulas(form5) imp5 <- mice(nhanes, formulas = form5, print = FALSE, m = 1, seed = 71712)
Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.