On 03-10-2010, at 17:24, artur tarassow wrote: > Hi, > > last year the non-linear Wald-Test was implemented. The following > example is given: > > <script> function restr (matrix *b) matrix ret = b[1]/b[2] - > b[4]/b[5] return matrix ret end function > > open data4-10 ols 1 0 2 3 4 5 restrict rfunc = restr end restrict > </script> > > But running this script yields the error: ---------------------- ? > restrict ? rfunc = restr ? end restrict Data types not conformable > for operation > > Error executing script: halting >> end restrict > ---------------------- > > I am not sure what the exact problem is. According to the Gret reference manual (gretl 1.9.1,page 47) the function restr should be declared as function restr (const matrix b)