[Gretl-users] Re: Error executing the convolve.inp script file

On Fri, Jul 24, 2026 at 1:53 PM Artur Bala <artur.bala.tn(a)gmail.com&gt; wrote: > > Thank you Sven, > It's the script file on Fast Fourier Transform from Gretl's examples. > (I just grabbed some script files at random for testing purposes, nothing specific.) Thanks for the report, Artur. That example script was way out of date; we should have noticed! It's now replaced in git. Here's a preview of the corrected version: # define two polynomials a = { 1, 0.5, 0, 0 }' b = { 1, 0.3, -0.8, 0 }' print a b # perform the transforms f = fft(a ~ b) print f # multiply the two transforms fc = f[,1] .* f[,2] print fc # compute the coefficients of c = a * b via the inverse transform c = ffti(fc) print c Allin _______________________________________________ Gretl-users mailing list -- gretl-users(a)gretlml.univpm.it To unsubscribe send an email to gretl-users-leave(a)gretlml.univpm.it Website: https://gretlml.univpm.it/postorius/lists/gretl-users.gretlml.univpm.it/