On 04/02/2025 19:01, Artur T. wrote: Maybe the best thing would be asking these guys to provide the data in gdt format themselves. Since they already offer the Stata format, all one has to do is 1) open the stata file 2) (optional) add the panel structure to the data file 3) store as gretl A minimal script to achieve this would be (assuming you have the data in Stata format already) <hansl> open GMD.dta PANEL_WANTED = 1 if PANEL_WANTED setobs ISO3 year --panel-vars setobs 1 1083 --panel-time endif store GMD.gdt --gzipped </hansl> PS: one may also want to rename the "inv" variable to avoid the conflict with the function by the same name. ------------------------------------------------------- Riccardo (Jack) Lucchetti Dipartimento di Scienze Economiche e Sociali (DiSES) Università Politecnica delle Marche (formerly known as Università di Ancona) r.lucchetti(a)univpm.it http://www2.econ.univpm.it/servizi/hpp/lucchetti -------------------------------------------------------