Dear All,<div><br></div><div>It is my first time using Gretl, I love it.  I am trying to estimate a cost function system of equations (Jorgensen 1986).  I am imposing restrictions on the parameters to impose cost exhaustion and homegeneity conditions.  I am using a cross sectional dataset of electric power plants in the US--I am researching the impact on cost of generation of availability of water and the selection of cooling systems.
</div><div><br></div><div>I would really appreciate it if you can look at my Gretl instructions and tell me if I am making any mistakes--when I ran the model I get no results.</div><div><br></div><div>These are the instructions:</div>
<div><br></div><div>**************************************************</div><div><p class="MsoNormal">system</p>

<p class="MsoNormal">equation S_Dep l_P_Dep l_P_labor l_Y</p>

<p class="MsoNormal">equation l_Tot_cost l_P_Dep l_P_labor l_Y sq_l_P_Dep
l_Dep_labor l_S_labor l_Dep_Y l_labor_Y sq_l_Y</p>

<p class="MsoNormal">end system</p>

<p class="MsoNormal"> </p>

<p class="MsoNormal">restrict </p>

<p class="MsoNormal">b[1,1] = b[2,2]</p>

<p class="MsoNormal">b[1,2] = b[2,5]</p>

<p class="MsoNormal">b[1,3] = b[2,6]</p>

<p class="MsoNormal">b[1,4] = b[2,8]</p>

<p class="MsoNormal">b[2,2] + b[2,3] = 1</p>

<p class="MsoNormal">b[2,8] + b[2,9] = 0</p>

<p class="MsoNormal">b[2,5] + b[2,6] = 0</p>

<p class="MsoNormal">b[2,6] + b[2,7] = 0</p>

<p class="MsoNormal">end restrict</p>

<p class="MsoNormal"> </p>

<p class="MsoNormal">estimate</p><p class="MsoNormal">********************************************************************************************</p><p class="MsoNormal"><br></p><p class="MsoNormal">Cheers and thanks,</p>
<p class="MsoNormal"><br></p><p class="MsoNormal">Carlos </p></div>