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    <p>Karl and Jeff,</p>
    <p>    The problem is that the GOES-16 data aren't on a constant
      grid or on a standard map projection, so I don't know of an easy
      way to make a GrADS control file that can adequately capture the
      navigation information in the file.  I've resorted to writing
      FORTRAN 90 code to remap the GOES-16 data onto a lat / lon grid
      and then plotting that in GrADS.<br>
    </p>
    <p>Cheers,</p>
    <p>Bob<br>
    </p>
    <div class="moz-cite-prefix">On 11/7/2018 1:50 PM, Jeff Duda wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:CAAig09BHT920MSR2fUkQ0zS9ZXOSvOZzsWyaR5n5BnKaWsD=Mg@mail.gmail.com">
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      <div dir="ltr">
        <div dir="ltr">This page (<a
            href="http://cola.gmu.edu/grads/gadoc/gradcomdxdfopen.html"
            moz-do-not-send="true">http://cola.gmu.edu/grads/gadoc/gradcomdxdfopen.html</a>)
          will give you all the information you need to create a control
          file. You can use ncdump -h or ncdump -c to get the attribute
          and dimension information and coordinate dumps needed.
          <div><br>
          </div>
          <div>Jeff Duda</div>
        </div>
      </div>
      <br>
      <div class="gmail_quote">
        <div dir="ltr">On Wed, Nov 7, 2018 at 11:36 AM Schneider, Karl P
          <<a href="mailto:kps5442@psu.edu" moz-do-not-send="true">kps5442@psu.edu</a>>
          wrote:<br>
        </div>
        <blockquote class="gmail_quote" style="margin:0 0 0
          .8ex;border-left:1px #ccc solid;padding-left:1ex">
          <div dir="auto">
            Bob, to clarify, I can create an image, but the problem is
            that like you mentioned, I’m not sure of a way to overlay
            the basemap. 
            <div><br>
            </div>
            <div>Jeff, </div>
            <div>That seems like what I need to do. Could you provide an
              example of a control file that might do the trick? </div>
            <div><br>
            </div>
            <div>Karl<br>
              <br>
              <div dir="ltr"><br>
                On Nov 7, 2018, at 1:12 PM, Jeff Duda <<a
                  href="mailto:jeffduda319@gmail.com" target="_blank"
                  moz-do-not-send="true">jeffduda319@gmail.com</a>>
                wrote:<br>
                <br>
              </div>
              <blockquote type="cite">
                <div dir="ltr">
                  <div dir="ltr">Have you tried writing a short control
                    file and using xdfopen instead? That is a way of
                    getting around netcdf files that aren't perfectly
                    formatted.
                    <div><br>
                    </div>
                    <div>Jeff Duda</div>
                  </div>
                  <br>
                  <div class="gmail_quote">
                    <div dir="ltr">On Wed, Nov 7, 2018 at 9:45 AM
                      Schneider, Karl P <<a
                        href="mailto:kps5442@psu.edu" target="_blank"
                        moz-do-not-send="true">kps5442@psu.edu</a>>
                      wrote:<br>
                    </div>
                    <blockquote class="gmail_quote" style="margin:0 0 0
                      .8ex;border-left:1px #ccc solid;padding-left:1ex">
                      <div dir="ltr">
                        <div
                          id="m_-1042449384326600893m_285517113583969585divtagdefaultwrapper"
style="font-size:12pt;color:#000000;font-family:Calibri,Helvetica,sans-serif"
                          dir="ltr">
                          <p style="margin-top:0;margin-bottom:0">Hi
                            everyone,</p>
                          <p style="margin-top:0;margin-bottom:0">I'm
                            looking for a way to plot some satellite
                            data in GrADS. I've found a source for
                            GOES-16 netcdf data, but its format is not
                            compatible as shown below; the lat and lon
                            are set to the number of grid points in the
                            file, not the lat/lon extent of the file:</p>
                          <p style="margin-top:0;margin-bottom:0"><br>
                          </p>
                          <div>ga-> sdfopen
OR_ABI-L2-CMIPC-M3C02_G16_s20183111612182_e20183111614555_c20183111615060.nc<br>
                            Scanning self-describing file: 
OR_ABI-L2-CMIPC-M3C02_G16_s20183111612182_e20183111614555_c20183111615060.nc<br>
                            SDF file has no discernable time coordinate
                            -- using default values.<br>
                            SDF file
OR_ABI-L2-CMIPC-M3C02_G16_s20183111612182_e20183111614555_c20183111615060.nc
                            is open as file 1<br>
                            LON set to 0 9999 <br>
                            LAT set to 0 5999 <br>
                          </div>
                          <div><br>
                          </div>
                          <div>I've seen this issue pop up previously on
                            the forum, but there was no good answer I
                            could make sense of. I'm hoping someone
                            could share some code with me to help
                            resolve the issue, or better yet point me to
                            a source of netcdf's that can be read in via
                            the sdfopen command. <br>
                          </div>
                          <div><br>
                          </div>
                          <div>Thanks,</div>
                          <div>Karl<br>
                            <br>
                          </div>
                          <br>
                        </div>
                      </div>
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                                      <div><font size="2"><span>Jeff
                                            Duda, Research Scientist<br>
                                          </span></font>
                                        <p
                                          style="margin-bottom:0.0001pt"><font
                                            size="2"><span><span>University
                                                of Colorado Boulder</span></span></font></p>
                                        <font size="2"><span></span></font>
                                        <p
                                          style="margin-bottom:0.0001pt"><font
                                            size="2"><span><span>Cooperative
                                                Institute for Research
                                                in Environmental
                                                Sciences</span></span></font></p>
                                        <font size="2"><span></span></font>
                                        <p
                                          style="margin-bottom:0.0001pt"><font
                                            size="2"><span><span>NOAA/OAR/ESRL/Global
                                                Systems Division</span></span></font></p>
                                        <font size="2"><span><span>Boulder,
                                              CO</span></span></font> </div>
                                    </div>
                                  </div>
                                </div>
                              </div>
                            </div>
                          </div>
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                    </div>
                  </div>
                </div>
              </blockquote>
              <blockquote type="cite">
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                          <div><font size="2"><span>Jeff Duda, Research
                                Scientist<br>
                              </span></font>
                            <p style="margin-bottom:0.0001pt"><font
                                size="2"><span><span>University of
                                    Colorado Boulder</span></span></font></p>
                            <font size="2"><span>
                              </span></font>
                            <p style="margin-bottom:0.0001pt"><font
                                size="2"><span><span>Cooperative
                                    Institute for Research in
                                    Environmental Sciences</span></span></font></p>
                            <font size="2"><span>
                              </span></font>
                            <p style="margin-bottom:0.0001pt"><font
                                size="2"><span><span>NOAA/OAR/ESRL/Global
                                    Systems Division</span></span></font></p>
                            <font size="2"><span>
                                <span>Boulder, CO</span></span></font>
                          </div>
                        </div>
                      </div>
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                  </div>
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      <fieldset class="mimeAttachmentHeader"></fieldset>
      <pre class="moz-quote-pre" wrap="">_______________________________________________
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</pre>
    </blockquote>
    <pre class="moz-signature" cols="72">-- 
Bob Kuligowski, Ph.D.
Meteorologist
NOAA/NESDIS/Center for Satellite Applications and Research (STAR)

Mailing Address:
National Oceanic and Atmospheric Administration
NESDIS STAR/SMCD
Bob Kuligowski
NCWCP E/RA2
5830 University Research Court
2nd Floor, Office #2828
College Park, MD 20740-3818

Phone:  (301) 683-3593
Fax  :  (301) 683-3616

<a class="moz-txt-link-freetext" href="http://www.star.nesdis.noaa.gov/star/Kuligowski_B.php">http://www.star.nesdis.noaa.gov/star/Kuligowski_B.php</a>
<a class="moz-txt-link-freetext" href="http://www.star.nesdis.noaa.gov/smcd/emb/ff/index.php">http://www.star.nesdis.noaa.gov/smcd/emb/ff/index.php</a>

</pre>
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