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    This problem is decades old, since the beginning of GrADS, but there
    are several work arounds.  You don't need to buy Adobe Pro.<br>
    <pre class="moz-signature" cols="72">Alan

Alan Robock, Distinguished Professor
  Associate Editor, Reviews of Geophysics
Department of Environmental Sciences             Phone: +1-848-932-5751
Rutgers University                    E-mail: <a class="moz-txt-link-abbreviated" href="mailto:robock@envsci.rutgers.edu">robock@envsci.rutgers.edu</a>
14 College Farm Road            <a class="moz-txt-link-freetext" href="http://people.envsci.rutgers.edu/robock">http://people.envsci.rutgers.edu/robock</a>
New Brunswick, NJ 08901-8551  USA      ☮ <a class="moz-txt-link-freetext" href="http://twitter.com/AlanRobock">http://twitter.com/AlanRobock</a></pre>
    <div class="moz-cite-prefix">On 7/13/2020 7:03 PM, Kyle Clem wrote:<br>
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        Thanks for your reply Lyndz and Jennifer.</div>
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        Jennifer-the white lines appear when opening the .pdf in Preview
        (as you mentioned), but also in Powerpoint and Google Chrome.
        Are you implying that the white lines are unavoidable (for a
        .pdf) except when using more sophisticated software such as
        Adobe Pro and/or those used by production teams in publication?</div>
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        So essentially to avoid these white lines for Powerpoint
        presentations, etc, I should use a .png or similar? The only
        headache here is the different looks of .png versus .pdf so this
        would require editing the plot specifications when going back
        and forth.</div>
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        Thanks,</div>
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        Kyle</div>
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      <div id="divRplyFwdMsg" dir="ltr"><font style="font-size:11pt" face="Calibri, sans-serif" color="#000000"><b>From:</b>
          gradsusr <a class="moz-txt-link-rfc2396E" href="mailto:gradsusr-bounces@gradsusr.org"><gradsusr-bounces@gradsusr.org></a> on behalf of
          Adams, Jennifer M. (GSFC-610.2)[ADNET SYSTEMS INC]
          <a class="moz-txt-link-rfc2396E" href="mailto:jennifer.m.adams@nasa.gov"><jennifer.m.adams@nasa.gov></a><br>
          <b>Sent:</b> Tuesday, 14 July 2020 12:26 AM<br>
          <b>To:</b> GrADS Users Forum <a class="moz-txt-link-rfc2396E" href="mailto:gradsusr@gradsusr.org"><gradsusr@gradsusr.org></a><br>
          <b>Subject:</b> Re: [gradsusr] [EXTERNAL] Re: white lines on
          pdf after Mac update to Catalina</font>
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          <p class="x_MsoNormal">It is not a problem with the graphics
            library in GrADS, it is more of an issue with the .pdf
            rendering software. The Preview App on Mac is not as good as
            Adobe Pro (you get what you pay for), and you won’t see
            those lines in professionally published articles. </p>
          <p class="x_MsoNormal">--Jennifer</p>
          <p class="x_MsoNormal"> </p>
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            <p class="x_MsoNormal"><span style="font-size:10.0pt">-- <span style="color:black"><br>
                  Jennifer Miletta Adams<br>
                  ADNET Systems, Inc.<br>
                  NASA/GSFC, Code 610.2</span></span></p>
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              <p class="x_MsoNormal"><span style="font-size:10.0pt;
                  color:black">Building 32, Room S159<br>
                  (301) 614-6070</span></p>
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            <p class="x_MsoNormal"><b><span style="font-size:12.0pt;
                  color:black">From: </span>
              </b><span style="font-size:12.0pt; color:black">gradsusr
                <a class="moz-txt-link-rfc2396E" href="mailto:gradsusr-bounces@gradsusr.org"><gradsusr-bounces@gradsusr.org></a> on behalf of Lyndz
                <a class="moz-txt-link-rfc2396E" href="mailto:olagueralyndonmark429@gmail.com"><olagueralyndonmark429@gmail.com></a><br>
                <b>Reply-To: </b>GrADS Users Forum
                <a class="moz-txt-link-rfc2396E" href="mailto:gradsusr@gradsusr.org"><gradsusr@gradsusr.org></a><br>
                <b>Date: </b>Monday, July 13, 2020 at 1:20 AM<br>
                <b>To: </b>GrADS Users Forum
                <a class="moz-txt-link-rfc2396E" href="mailto:gradsusr@gradsusr.org"><gradsusr@gradsusr.org></a><br>
                <b>Subject: </b>[EXTERNAL] Re: [gradsusr] white lines
                on pdf after Mac update to Catalina</span></p>
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                                              <p class="x_MsoNormal">Hi
                                                Kyle,</p>
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                                              <p class="x_MsoNormal">I
                                                just posted a similar
                                                problem several days
                                                ago. </p>
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                                              <p class="x_MsoNormal">They
                                                said that this is
                                                related to the graphics
                                                library.</p>
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                                              <p class="x_MsoNormal">Try
                                                to use a different
                                                output format (PNG or
                                                JPEG).</p>
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                                              <p class="x_MsoNormal"> </p>
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                                              <p class="x_MsoNormal">Also
                                                for other related
                                                issues,<span style="color:black"> try
                                                  a google search:
                                                  "site:</span><a href="https://apc01.safelinks.protection.outlook.com/?url=https%3A%2F%2Furldefense.proofpoint.com%2Fv2%2Furl%3Fu%3Dhttp-3A__gradsusr.org_%26d%3DDwMFaQ%26c%3DApwzowJNAKKw3xye91w7BE1XMRKi2LN9kiMk5Csz9Zk%26r%3DM2mFZsxo0ZoztoK2Lyoypu1kKkBVKyEoM9CXGWO42zk%26m%3DIK_PD7K_-OIiIVn2rBSVmskcQT2ALHPJ6ZPADyUlKeY%26s%3DjPP8aph0wR0jGd6doaJKrOP60rNa7yNpqjbb5_dd3zY%26e%3D&data=02%7C01%7Ckyle.clem%40vuw.ac.nz%7C7f19860086384bddb3be08d8272b00dd%7Ccfe63e236951427e8683bb84dcf1d20c%7C0%7C0%7C637302413022415700&sdata=Ti85E12c1jdQTmkg7ODU4RNj95u0lrVwHVLUlsEvn90%3D&reserved=0" originalsrc="https://urldefense.proofpoint.com/v2/url?u=http-3A__gradsusr.org_&d=DwMFaQ&c=ApwzowJNAKKw3xye91w7BE1XMRKi2LN9kiMk5Csz9Zk&r=M2mFZsxo0ZoztoK2Lyoypu1kKkBVKyEoM9CXGWO42zk&m=IK_PD7K_-OIiIVn2rBSVmskcQT2ALHPJ6ZPADyUlKeY&s=jPP8aph0wR0jGd6doaJKrOP60rNa7yNpqjbb5_dd3zY&e=" shash="HjvdHBjomF7FL7Mz0T8Db+kC7DJi2l56P8grbqmuDEUCxiKk7f85wrl8SkCt/bqQUxZF53jTxa+KhYTi6ieOU0hzt8yfFSrmzI/tnO02cCdlUSd0YTYoDIZEcCnzfa2HJezKc77Shi7Tf8RxmTWBQRh2yrNZ6MrdcDxKEuX89ng=" target="_blank" moz-do-not-send="true">gradsusr.org</a><span style="color:black"> pdf
                                                   lines"</span></p>
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              <p class="x_MsoNormal">Sincerely,</p>
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              <p class="x_MsoNormal">Lyndz</p>
            </div>
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          <p class="x_MsoNormal"> </p>
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            <div>
              <p class="x_MsoNormal">On Mon, Jul 13, 2020 at 11:43 AM
                Kyle Clem <<a href="mailto:kyle.clem@vuw.ac.nz" moz-do-not-send="true">kyle.clem@vuw.ac.nz</a>>
                wrote:</p>
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              margin-right:0in">
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                  <p class="x_MsoNormal"><span style="font-size:12.0pt;
                      color:black">Hi GrADS users,</span></p>
                </div>
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                  <p class="x_MsoNormal"><span style="font-size:12.0pt;
                      color:black"> </span></p>
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                  <p class="x_MsoNormal"><span style="font-size:12.0pt;
                      color:black">I recently updated my MacBook Pro to
                      Catalina. I am running GrADS v2.1.1, and pdfs that
                      I print now contain white lines (see example pdf
                      attached) using the following syntax:</span></p>
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                  <p class="x_MsoNormal"><span style="font-size:12.0pt;
                      color:black"> </span></p>
                </div>
                <div>
                  <p class="x_MsoNormal"><span style="font-size:12.0pt;
                      color:black">   'gxprint test.pdf white'</span></p>
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                <div>
                  <p class="x_MsoNormal"><span style="font-size:12.0pt;
                      color:black"> </span></p>
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                <div>
                  <p class="x_MsoNormal"><span style="font-size:12.0pt;
                      color:black">Does anyone know why or how to fix
                      this?</span></p>
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                  <p class="x_MsoNormal"><span style="font-size:12.0pt;
                      color:black"> </span></p>
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                  <p class="x_MsoNormal"><span style="font-size:12.0pt;
                      color:black">Thanks,</span></p>
                </div>
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                  <p class="x_MsoNormal"><span style="font-size:12.0pt;
                      color:black">Kyle</span></p>
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              <p class="x_MsoNormal">_______________________________________________<br>
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      <pre class="moz-quote-pre" wrap="">_______________________________________________
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</pre>
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