Dear gretl users,<br><br>&nbsp;&nbsp;&nbsp;&nbsp; I had estimated a OLS using first difference variables, but I would like to forecast the dependent variable in its level. I know that this is possible on EViews, where we can estimate a regression D(y) = a + b D(x) (where &quot;D&quot; states for the difference operator, &quot;a&quot; and &quot;b&quot; are parameters, and &quot;y&quot; and &quot;x&quot; are the variables) and obtain the predicted &quot;y&quot; values automatically. How can I do this on gretl?<br>
<br>Best,<br>Henrique C. de Andrade<br>Doutorando em Economia Aplicada<br>Universidade Federal do Rio Grande do Sul<br><a href="http://www.ufrgs.br/ppge">www.ufrgs.br/ppge</a><br>