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<p class="MsoNormal"><span style="font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:#1F497D">I am attempting to go through the tutorial for the Windows version of GrADS,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:#1F497D"><a href="http://ieges.org/grads/gadoc/tutorial.html">http://ieges.org/grads/gadoc/tutorial.html</a> .&nbsp; I performed the operations<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span></p>
<p class="MsoNormal"><span style="font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:#1F497D">clear<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:#1F497D">set lon -90<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:#1F497D">set lat&nbsp;&nbsp; 40<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:#1F497D">set lev 500<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:#1F497D">set t 1<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span></p>
<p class="MsoNormal"><span style="font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:#1F497D">on the data set model.ctl. In doing so, I received back after the &#8220;set lat 40&#8221; command the statement,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:#1F497D">&#8220;LAT set to 42 42&#8221;.&nbsp; Is this to be expected?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span></p>
<p class="MsoNormal"><span style="font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:#1F497D">After this, I gave the command &#8220;d z&#8221; and received back an &#8220;Invalid Operand&#8221; notice that &#8220;z not a variable or function name.&#8221;<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:#1F497D">Please advise.&nbsp; Thanks.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span></p>
<p class="MsoNormal"><b><i><span style="font-size:24.0pt;font-family:&quot;Brush Script MT&quot;;color:#00B050">Fred Mayes</span></i></b><i><span style="font-size:24.0pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:#00B050"><o:p></o:p></span></i></p>
<p class="MsoNormal"><span style="font-size:14.0pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:#1F497D">Senior Technology&nbsp; Analyst,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:14.0pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;&nbsp; Electricity, Coal,&nbsp; Nuclear and Renewables Office<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:#1F497D">Energy Information Administration<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:#1F497D">1000 Independence Ave., SW&nbsp;&nbsp; EI-34<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:#1F497D">Washington, DC&nbsp; 20585<o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:#17365D">(202) 586-1508 (W)<o:p></o:p></span></b></p>
<p class="MsoNormal"><o:p>&nbsp;</o:p></p>
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