semTools::semMI. lavaan ERROR [...] not a data.frame

[christop...@gmail.com]

I am running a lavaan model with semTools::semMI, using the following input:

out <- sem.mi(model, data = data, seed = 1234, ordered = ordered,
                       m = 20, miArgs = list(noms = "county2"))

Lavaan throws an error:

Error in (function (model = NULL, dataList = NULL, dataFunction = NULL,  :
  lavaan ERROR: (generated) data is not a data.frame (or a matrix)

I'm not able to fix this error... Data are in a date frame:

> class(data)
[1] "data.frame"

[christop...@gmail.com]

I might have found the error. Please hold any comment. 

[christop...@gmail.com]

The trick was to read above the error message... 

The following variable(s) are 'factors': 
[...]
You may have wanted to set this as a ID variable to remove it
from the imputation model or as an ordinal or nominal
variable to be imputed.  Please set it as either and
try again.

[Terrence Jorgensen]

out <- sem.mi(model, data = data, seed = 1234, ordered = ordered,
                       m = 20, miArgs = list(noms = "county2"))

Of course, the best thing to do is use multiple-imputation software directly, which allows you more control over the process and further features (e.g., diagnostics in mice).  Imputing "within" runMI() is a legacy feature that will not be supported for much longer. 

Terrence D. Jorgensen

Assistant Professor, Methods and Statistics

Research Institute for Child Development and Education, the University of Amsterdam

http://www.uva.nl/profile/t.d.jorgensen