On Tue, 3 Jan 2017, Jan Tille wrote:
 Thank you for your answers and apologies for the delayed response, I
 had to contact our admin, because of a safety feature under Windows, 
 that required admin rights for the first launch of Gretl 2016e git.
 I have tried to run Allin's first example, but still got an error 
 message ("Datenfehler" <-> "Data error") 
[...]
 I have no clue, why the script works on your systems but not on mine. 
Ah, I've found the remaining issue: it's a Windows thing. The 
Microsoft C library doesn't recognize either "nan" or "NaN" as
meaning 
not-a-number. We've had a work-around in place to handle "nan", as 
written by gretl in its matrix files, but this wasn't dealing with 
"NaN", as written by R. The work-around is now generalized to handle 
both, in git and today's snapshots.
Allin