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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Many thanks all.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Indeed gsnAddCyclic doesn’t work in this case. Mary’s suggestion is brilliant, and it works!<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Thanks again,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Arnold<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Mary Haley [mailto:haley@ucar.edu]
<br>
<b>Sent:</b> Wednesday, 27 May 2015 11:31 PM<br>
<b>To:</b> Alan Brammer<br>
<b>Cc:</b> Sullivan, Arnold (O&A, Aspendale); ncl-talk@ucar.edu; Kyle Griffin<br>
<b>Subject:</b> Re: [ncl-talk] Missing grid lines at zero degree<o:p></o:p></span></p>
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<p class="MsoNormal">Hi all,<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Unfortunately, gsnAddCyclic isn't seen by gsn_coordinates. This is an omission that should be fixed. I'll make a ticket for this.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Meanwhile, you can try the gsn_add_cyclic_point function, which is unadvertised (and hence not guaranteed to live forever). This function increases the input array by 1 point in the longitude dimension and it increases the longitude array
associated with it. I think it should work with coordinate arrays and lat2d/lon2d attributes.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:9.5pt"> pres = True<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:9.5pt"> pres@gsnCoordsAsLines = True ; Default is points<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:9.5pt"> pres@gsLineThicknessF = .1<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:9.5pt"> pres@gsLineColor = "Gray25"<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:9.5pt"> pres@gsnCoordsAttach = True<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:9.5pt"> gsn_coordinates(wks,plot1,gsn_add_cyclic_point(vMTemp),pres)<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:9.5pt"><o:p> </o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:9.5pt">I didn't actually try this (because I'm running out the door as I type this), so let me know if it doesn't work.<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:9.5pt"><o:p> </o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:9.5pt">--Mary<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:9.5pt"><o:p> </o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Wed, May 27, 2015 at 7:20 AM, Alan Brammer <<a href="mailto:abrammer@albany.edu" target="_blank">abrammer@albany.edu</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif"">Didn't Kyle Griffin reply to this message 2 days ago? <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif"">Did his suggestion not work?<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif"">"</span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">Hi Arnold,</span><span style="font-family:"Verdana","sans-serif""><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;color:black">Have you tried also setting<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;color:black">pres@gsnAddCyclic = True<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;color:black">This resource defaults to true in some of the newest versions of NCL, but defaulted to False for a long time and produces issues like this. gsnAddCyclic basically tells NCL to contour between the
first (longitude=0) and last (longitude=191 in your case) the same as it does other adjacent points, despite these points not technically being adjacent in the dataset.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;color:black">If there is still an issues after trying that, let us know and be sure to include the list.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;color:black">Kyle<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;color:black"><br clear="all">
<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;color:black">----------------------------------------<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;color:black">Kyle S. Griffin<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;color:black">Department of Atmospheric and Oceanic Sciences<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;color:black">University of Wisconsin - Madison<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;color:black">Room 1421<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;color:black">1225 W Dayton St, Madison, WI 53706<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;color:black">Email: <a href="mailto:ksgriffin2@wisc.edu" target="_blank">ksgriffin2@wisc.edu</a><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black"></span><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:black">"</span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black"></span><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On 27 May 2015 at 02:48, <<a href="mailto:Arnold.Sullivan@csiro.au" target="_blank">Arnold.Sullivan@csiro.au</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Hi there,<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Somehow I get a gap along the zero degree while plot polar region plus using gsn_coordinates to plot grid lat/lon lines.<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Is there any way to fill that gap?<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">The code that I use to plot the grid lines:<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">;---Data and grid read in:<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> mskFile = addfile("<a href="http://access.n96.newu2.nc" target="_blank">access.n96.newu2.nc</a>","r")<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> vTemp = rm_single_dims(mskFile->NEWVAR2(0,0,:,::2))<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> vMTemp = vTemp
<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">;---Call function to attach lat/lon lines.<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> pres = True<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> pres@gsnCoordsAsLines = True ; Default is points<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> pres@gsLineThicknessF = .1<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> pres@gsLineColor = "Gray25"<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> pres@gsnCoordsAttach = True
<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> gsn_coordinates(wks,plot1,vMTemp,pres)<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">The input file information:<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">;---Ncdump the netcdf file:<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">dimensions:<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> LONGITUDE = 192 ;<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> LATITUDE_1 = 144 ;<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> HYBRID_HT = 85 ;<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">variables:<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> double LONGITUDE(LONGITUDE) ;<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> LONGITUDE:units = "degrees_east" ;<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> LONGITUDE:point_spacing = "even" ;<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> LONGITUDE:modulo = " " ;<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> LONGITUDE:axis = "X" ;<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> double LATITUDE_1(LATITUDE_1) ;<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> LATITUDE_1:units = "degrees_north" ;<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> LATITUDE_1:point_spacing = "even" ;<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> LATITUDE_1:axis = "Y" ;<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> float NEWVAR2(T, HYBRID_HT, LATITUDE_1, LONGITUDE) ;<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> NEWVAR2:missing_value = -1.e+34f ;<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> NEWVAR2:_FillValue = -1.e+34f ;<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> NEWVAR2:long_name = "U[G=NEW_GRID]" ;<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> NEWVAR2:history = "From access.n96.uv" ;<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Regards,<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Arnold<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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