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    <p>Hi again</p>
    <p>I think I found the answer with my question.</p>
    <p>My data array is too big. When I reduce that data size to 1day (8
      time steps), wrf_user_getvar function works.</p>
    <p>Thanks</p>
    <p>Sheng-Hung</p>
    <br>
    <div class="moz-cite-prefix">On 12/6/2017 10:34 AM, Sheng-Hung Wang
      wrote:<br>
    </div>
    <blockquote type="cite"
      cite="mid:d5a78914-bbe0-460a-22de-904c1145b5d8@osu.edu">
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      <p>Hi Mary</p>
      <p>Maybe I should make it clear in my question.</p>
      <p>wrf_user_getvar is working on 2D variables (in your case T2)
        for multiple files.</p>
      <p>It seems not working on 3D variable (in my example pressures of
        model levels) for multiple files.</p>
      <p>I used the way you used to open multiple wrfout files.</p>
      <p>I can get by using do loop for each file, but it is kind of
        slow.<br>
      </p>
      <p>Thanks</p>
      <p>Sheng-Hung<br>
      </p>
      <br>
      <div class="moz-cite-prefix">On 12/5/2017 6:32 PM, Mary Haley
        wrote:<br>
      </div>
      <blockquote type="cite"
cite="mid:CACNN_CKiVW_3Ag3U2CpY=po4XKXHm6y5DR0xHjk6ARA63_jGJg@mail.gmail.com">
        <div dir="ltr">
          <div class="gmail_default" style="font-size:small">Sheng-Hung,</div>
          <div class="gmail_default" style="font-size:small"><br>
          </div>
          <div class="gmail_default" style="font-size:small">Using a
            list of files should work with wrf_user_getvar, but you
            didn't indicate how the function was failing, or how you are
            trying to open the files.</div>
          <div class="gmail_default" style="font-size:small"><br>
          </div>
          <div class="gmail_default" style="font-size:small">It should
            work with something like this:</div>
          <div class="gmail_default" style="font-size:small"><br>
          </div>
          <div class="gmail_default">
            <div class="gmail_default"><font face="monospace, monospace">ncl
                0> fnames = systemfunc("ls -1
                wrfout_d01_2008-09-29*")</font></div>
            <div class="gmail_default"><font face="monospace, monospace">ncl
                1> print("# of files = " + dimsizes(fnames))</font></div>
            <div class="gmail_default"><font face="monospace, monospace">(0) 
                   # of files = 48</font></div>
            <div class="gmail_default"><font face="monospace, monospace">ncl
                2> a = addfiles(fnames,"r")</font></div>
            <div class="gmail_default"><font face="monospace, monospace">ncl
                3> t = wrf_user_getvar(a,"T2",-1) </font></div>
            <div class="gmail_default"><font face="monospace, monospace">ncl
                4> printVarSummary(t)</font></div>
            <div class="gmail_default"><font face="monospace, monospace"><br>
              </font></div>
            <div class="gmail_default"><font face="monospace, monospace">Variable:
                t</font></div>
            <div class="gmail_default"><font face="monospace, monospace">Type:
                float</font></div>
            <div class="gmail_default"><font face="monospace, monospace">Total
                Size: 7791744 bytes</font></div>
            <div class="gmail_default"><font face="monospace, monospace"> 
                          1947936 values</font></div>
            <div class="gmail_default"><font face="monospace, monospace">Number
                of Dimensions: 3</font></div>
            <div class="gmail_default"><font face="monospace, monospace">Dimensions
                and sizes:<span style="white-space:pre">        </span>[Time |
                48] x [south_north | 197] x [west_east | 206]</font></div>
            <div class="gmail_default"><font face="monospace, monospace">Coordinates: </font></div>
            <div class="gmail_default"><font face="monospace, monospace">Number
                Of Attributes: 6</font></div>
            <div class="gmail_default"><font face="monospace, monospace"> 
                FieldType :<span style="white-space:pre">       </span>104</font></div>
            <div class="gmail_default"><font face="monospace, monospace"> 
                MemoryOrder :<span style="white-space:pre">     </span>XY </font></div>
            <div class="gmail_default"><font face="monospace, monospace"> 
                description :<span style="white-space:pre">     </span>TEMP
                at 2 M</font></div>
            <div class="gmail_default"><font face="monospace, monospace"> 
                units :<span style="white-space:pre">   </span>K</font></div>
            <div class="gmail_default"><font face="monospace, monospace"> 
                stagger :<span style="white-space:pre"> </span></font></div>
            <div class="gmail_default"><font face="monospace, monospace"> 
                coordinates :<span style="white-space:pre">     </span>XLONG
                XLAT</font></div>
            <div class="gmail_default"><font face="monospace, monospace">ncl
                5> </font></div>
            <div class="gmail_default"><br>
            </div>
            <div class="gmail_default">--Mary</div>
          </div>
          <div class="gmail_default" style="font-size:small"><br>
          </div>
        </div>
        <div class="gmail_extra"><br>
          <div class="gmail_quote">On Mon, Dec 4, 2017 at 12:08 PM,
            Sheng-Hung Wang <span dir="ltr"><<a
                href="mailto:wang.446@osu.edu" target="_blank"
                moz-do-not-send="true">wang.446@osu.edu</a>></span>
            wrote:<br>
            <blockquote class="gmail_quote" style="margin:0 0 0
              .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi<br>
              <br>
              Is there a problem (or bug) for following NCL statement<br>
              <br>
              wrf_P = wrf_user_getvar(a,"pressure",-<wbr>1)<br>
              <br>
              a is multiple wrfout files.<br>
              <br>
              When I changed time=-1 to single time step, the function
              worked. It didn't work on multiple time steps.<br>
              <br>
              Thanks<br>
              <br>
              Sheng-Hung<br>
              <br>
              -- <br>
              ==============================<wbr>==========<br>
               Sheng-Hung Wang, PhD<br>
               Polar Meteorology Group<br>
               Byrd Polar and Climate Research Center<br>
               The Ohio State University<br>
               1090 Carmack Road, Columbus, Ohio 43210<br>
               Phone: <a href="tel:%28614%29%20292-1060"
                value="+16142921060" target="_blank"
                moz-do-not-send="true">(614) 292-1060</a><br>
               Fax:   <a href="tel:%28614%29%20292-4697"
                value="+16142924697" target="_blank"
                moz-do-not-send="true">(614) 292-4697</a><br>
               email: <a href="mailto:wang.446@osu.edu" target="_blank"
                moz-do-not-send="true">wang.446@osu.edu</a><br>
              ==============================<wbr>==========<br>
              <br>
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            </blockquote>
          </div>
          <br>
        </div>
      </blockquote>
      <br>
      <pre class="moz-signature" cols="72">-- 
========================================
 Sheng-Hung Wang, PhD
 Polar Meteorology Group
 Byrd Polar and Climate Research Center
 The Ohio State University
 1090 Carmack Road, Columbus, Ohio 43210
 Phone: (614) 292-1060
 Fax:   (614) 292-4697
 email: <a class="moz-txt-link-abbreviated" href="mailto:wang.446@osu.edu" moz-do-not-send="true">wang.446@osu.edu</a>
========================================
</pre>
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    </blockquote>
    <br>
    <pre class="moz-signature" cols="72">-- 
========================================
 Sheng-Hung Wang, PhD
 Polar Meteorology Group
 Byrd Polar and Climate Research Center
 The Ohio State University
 1090 Carmack Road, Columbus, Ohio 43210
 Phone: (614) 292-1060
 Fax:   (614) 292-4697
 email: <a class="moz-txt-link-abbreviated" href="mailto:wang.446@osu.edu">wang.446@osu.edu</a>
========================================
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