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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Change:<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:12.0pt">b = $a + "a01"$<o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">to:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-bottom:12.0pt">b = a + "a01"<o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal" style="background:white"><b><span style="font-size:17.0pt;font-family:"Lucida Handwriting";color:#1F497D">Wei Huang</span></b><span style="font-size:9.5pt;font-family:"Lucida Handwriting";color:#222222"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> ncl-talk-bounces@ucar.edu [mailto:ncl-talk-bounces@ucar.edu]
<b>On Behalf Of </b>Zhifeng Yang<br>
<b>Sent:</b> Friday, August 28, 2015 10:59 AM<br>
<b>To:</b> Talk NCL<br>
<b>Subject:</b> [ncl-talk] convert string to variable name<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">Hi <o:p></o:p></p>
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<p class="MsoNormal">I wanted to change variable names through strings. Since I use the similar property while I read variable from .nc file. For instance,
<o:p></o:p></p>
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<p class="MsoNormal">a = "var"<o:p></o:p></p>
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<p class="MsoNormal">b = addfile(filename + ".nc", "r")<o:p></o:p></p>
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<p class="MsoNormal">c = b->$a$<o:p></o:p></p>
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<p class="MsoNormal">In this case, I can change a to change the variable names.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Now I wanted to use the similar feature to modify variable names. For instance,<o:p></o:p></p>
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<p class="MsoNormal">a is a string, <o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">a = "var"<o:p></o:p></p>
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<p class="MsoNormal">b is a variable. I want to modify b by using <o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">b = $a + "a01"$<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">Unfortunately, I got the error below.<br>
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fatal:syntax error: line 1 before or near $ <br>
b = $<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">Do you know whether these is any way to change the variable name like what I want?<o:p></o:p></p>
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<p class="MsoNormal">Thank you<o:p></o:p></p>
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<p class="MsoNormal">Zhifeng<o:p></o:p></p>
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