The OP's message below was sent to gretl-users-owner, a backdoor way of trying to get the attention of gretl people ;-) I'm forwarding it to the gretl-users list, where it should have been posted, and where might be of interest to others. Here's Jack Lucchetti's reply to the original email: <jack> On Tue, 18 Jan 2022, Matt Marcoux wrote: You'll get what you want from the ARMA_IRF function package. </jack> I'll just add: if the term "function package" doesn't resonate with anyone, please take a look at the "Packages" item under the Help menu in gretl's main window. -- Allin Cottrell Department of Economics Wake Forest University