<span style="font-family:arial, sans-serif;font-size:13px;border-collapse:collapse">Hello everybody<div><br></div><div>I am using &quot;cdiff&quot; function along z-dimension to fine dvar/dz e.g </div>
<div><br></div><div>-&gt; &#39;set z 1 17&#39;</div><div>-&gt; &#39;define dvar = cdiff(var,z)<br clear="all"><br></div><div>but I have following error</div><div><span style="font-family:&#39;Times New Roman&#39;;font-size:medium"><pre style="white-space:pre-wrap;word-wrap:break-word">
Error from CDIFF:  Specified dimension non varying
Operation Error:  Error from cdiff function
  Error ocurred at column 1</pre><pre style="white-space:pre-wrap;word-wrap:break-word"><font face="arial"><span style="white-space:normal;font-size:small">can anybody figure out the problem?</span></font></pre>
<pre style="white-space:pre-wrap;word-wrap:break-word"><font face="arial"><span style="white-space:normal;font-size:small">Thanks</span></font></pre></span></div></span><br>-- <br>MUHAMMAD AFZAAL KARORI<br><br>