<div dir="ltr">Hi Marston,<div>Thanks for providing your data file and a easy to run script as that always makes debugging so much easier. </div><div><br></div><div>Looking at your longitudes they are regularly spaced from 1.267E to 357.349E by 2.5254 degrees. I believe the gsn_add_cyclic error message is coming in because the spacing between your first and last longitudes is much larger than the spacing between all other neighboring longitudes: 3.91 degrees. Thus, you can set gsnAddCyclic = True (=the default) and NCL will interpolate between the first and last longitudes when plotting, but it will warn you that it isn't sure it should be doing this.</div><div><br></div><div>Thus, if you are fine with NCL interpolating over the larger distance over the prime meridian I do not think you need to worry about the error messages. If you really want to get rid of them you can try interpolating to a new longitude between your first and last longitudes (that will result in very irregular longitude spacing and still might not get rid of the error messages) or interpolating to a new grid (say a 2.5 degree grid that starts at 0).</div><div><br></div><div>Hope that helps!</div><div>Adam </div></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Dec 14, 2016 at 12:25 PM, Marston Johnston <span dir="ltr"><<a href="mailto:shejo284@gmail.com" target="_blank">shejo284@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div bgcolor="white" lang="EN-GB" link="blue" vlink="purple"><div class="m_5768595000417529802WordSection1"><p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri">Hi Dennis,<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri"><u></u> <u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri">Appreciate you looking into this.<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri">My script: plot_tr_stats.ncl<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri">Data: stat_trs_scl_VOR850_neg_1.nc<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri"><u></u> <u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri">The files are uploaded.<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri"><u></u> <u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri">Best,<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri">/M<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri"><u></u> <u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri"><u></u> <u></u></span></p><div style="border:none;border-top:solid #b5c4df 1.0pt;padding:3.0pt 0cm 0cm 0cm"><p class="MsoNormal"><b><span style="font-family:Calibri;color:black">From: </span></b><span style="font-family:Calibri;color:black"><<a href="mailto:ncl-talk-bounces@ucar.edu" target="_blank">ncl-talk-bounces@ucar.edu</a>> on behalf of Dennis Shea <<a href="mailto:shea@ucar.edu" target="_blank">shea@ucar.edu</a>><br><b>Date: </b>Wednesday, 14 December 2016 at 18:21<br><b>To: </b>Marston Johnston <<a href="mailto:marston.johnston@gu.se" target="_blank">marston.johnston@gu.se</a>><br><b>Cc: </b>"<a href="mailto:ncl-talk@ucar.edu" target="_blank">ncl-talk@ucar.edu</a>" <<a href="mailto:ncl-talk@ucar.edu" target="_blank">ncl-talk@ucar.edu</a>><br><b>Subject: </b>Re: [ncl-talk] polar plot and gsnAddCyclic<u></u><u></u></span></p></div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><div><div><div><div><div><div><div><div><div><p class="MsoNormal" style="margin-bottom:12.0pt">I think you will have to provide a clean script and the data for ncl-talk to address this issue.<u></u><u></u></p></div><p class="MsoNormal">ftp <a href="http://ftp.cgd.ucar.edu" target="_blank">ftp.cgd.ucar.edu</a><u></u><u></u></p></div><p class="MsoNormal">anonymous<u></u><u></u></p></div><p class="MsoNormal">your_email<u></u><u></u></p></div><p class="MsoNormal">cd incoming<u></u><u></u></p></div><p class="MsoNormal">put ... script ...<u></u><u></u></p></div><p class="MsoNormal">put ... data ...<u></u><u></u></p></div><p class="MsoNormal" style="margin-bottom:12.0pt">quit<u></u><u></u></p></div><p class="MsoNormal" style="margin-bottom:12.0pt">Let ncl-talk know after successful completion of the ftp transfer.<u></u><u></u></p></div><p class="MsoNormal">THX<u></u><u></u></p></div><div><p class="MsoNormal"><u></u> <u></u></p><div><p class="MsoNormal">On Mon, Dec 12, 2016 at 5:32 AM, Marston Johnston <<a href="mailto:marston.johnston@gu.se" target="_blank">marston.johnston@gu.se</a>> wrote:<u></u><u></u></p><blockquote style="border:none;border-left:solid #cccccc 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-right:0cm"><div><div><p class="MsoNormal"><span style="font-size:11.0pt">Hi,</span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt"> </span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt">I’m trying to make some plot using the polar stereographic projection.</span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt">When I set res@gsnAddCyclic = False, everything works well but the plots have a gap at 0 deg longitude. However, whenever I set this to True, I get the standard warning that my longitude data doesn’t go to 360, but I don’t get a gap in the data. <br>Is there a way to remove the gap and the warning? I was thinking of just extending the longitude copying the last longitude values to this new line, but searching for something more elegant. <br>Note: this doesn’t happen when using Mercator projection.</span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt"> </span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt">/M</span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt"> </span><u></u><u></u></p><p class="MsoNormal"><span style="color:#0070c0">~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</span><u></u><u></u></p><p class="MsoNormal"><span style="color:#0070c0">Marston S. Johnston, PhD</span><u></u><u></u></p><p class="MsoNormal"><span style="color:#0070c0">Department of Earth Sciences</span><u></u><u></u></p><p class="MsoNormal"><span style="color:#0070c0">University of Gothenburg, Sweden</span><u></u><u></u></p><p class="MsoNormal"><span style="color:#0070c0">Email: <a href="mailto:marston.johnston@gu.se" target="_blank"><span style="color:#0070c0">marston.johnston@gu.se</span></a></span><u></u><u></u></p><p class="MsoNormal"><span style="color:#0070c0">SkypeID: marston.johnston </span><u></u><u></u></p><p class="MsoNormal"><span style="color:#0070c0">Phone: <a href="tel:+46%2031%20786%2049%2001" target="_blank">+46-31-7864901</a> </span><u></u><u></u></p><p class="MsoNormal"><span style="color:#0070c0">Only the fruitful thing is true!</span><u></u><u></u></p><p class="MsoNormal"><span style="color:#0070c0">~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</span><u></u><u></u></p><p class="MsoNormal"> <u></u><u></u></p></div></div><p class="MsoNormal" style="margin-bottom:12.0pt"><br>______________________________<wbr>_________________<br>ncl-talk mailing list<br><a href="mailto:ncl-talk@ucar.edu" target="_blank">ncl-talk@ucar.edu</a><br>List instructions, subscriber options, unsubscribe:<br><a href="http://mailman.ucar.edu/mailman/listinfo/ncl-talk" target="_blank">http://mailman.ucar.edu/<wbr>mailman/listinfo/ncl-talk</a><u></u><u></u></p></blockquote></div><p class="MsoNormal"><u></u> <u></u></p></div><p class="MsoNormal">______________________________<wbr>_________________ ncl-talk mailing list <a href="mailto:ncl-talk@ucar.edu" target="_blank">ncl-talk@ucar.edu</a> List instructions, subscriber options, unsubscribe: <a href="http://mailman.ucar.edu/mailman/listinfo/ncl-talk" target="_blank">http://mailman.ucar.edu/<wbr>mailman/listinfo/ncl-talk</a> <u></u><u></u></p></div></div>
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<br></blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div><div><span><font color="#888888">Adam Phillips <br></font></span></div><span><font color="#888888">Associate Scientist, </font></span><span><font color="#888888">Climate and Global Dynamics Laboratory, NCAR<br></font></span></div></div><div><span><font color="#888888"><a href="http://www.cgd.ucar.edu/staff/asphilli/" target="_blank">www.cgd.ucar.edu/staff/asphilli/</a> </font></span><span><font color="#888888">303-497-1726 </font></span></div><span><font color="#888888"></font></span><div><div><span><font color="#888888"><br></font></span><div><span><font color="#888888"><a href="http://www.cgd.ucar.edu/staff/asphilli" target="_blank"></a></font></span></div></div></div></div></div></div></div></div></div></div></div>
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