<div dir="ltr"><div class="gmail_default" style="font-size:small">The error is indicating that you are trying to take the log of data that is negative.</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">You might try commenting this line to see if it helps:</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">







<p class="">  resl@trYAxisType = &quot;LogAxis&quot;</p><p class=""><br></p><p class="">Also, look at your &quot;power&amp;period&quot; data to see if there are any issues with it.</p><p class=""><br></p><p class="">--Mary</p></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Feb 20, 2015 at 6:18 AM,  <span dir="ltr">&lt;<a href="mailto:jorge.conrado@cptec.inpe.br" target="_blank">jorge.conrado@cptec.inpe.br</a>&gt;</span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><br>
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<br>
      Hi,<br>
<br>
<br>
      I have the NCL Version 6.2.1 and I&#39;m trying to run the script<br>
wavelet_2.ncl.<br>
<br>
      I did : wavelet_2.ncl    and I had the message:<br>
<br>
      warning:XyPlotSetValues:xyYStyle is NhlLOG:trYMinF can&#39;t be &lt;=<br>
0.0:Setting xyComputeYMin to True<br>
<br>
<br>
      Please what can I do to solve this error.<br>
<br>
<br>
      Thank in advance,<br>
<br>
<br>
      Conrado<br>
<br>
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