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<p class="MsoNormal"><span style="color:#1F497D">Many thanks Will!!<o:p></o:p></span></p>
<p class="MsoNormal"><span style="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""> Will Hobbs [mailto:Will.Hobbs@utas.edu.au]
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<b>Sent:</b> Friday, 22 May 2015 11:28 AM<br>
<b>To:</b> Sullivan, Arnold (O&A, Aspendale); ncl-talk@ucar.edu<br>
<b>Subject:</b> Re: [ncl-talk] overlaying of two polar maps<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"><span style="font-size:10.5pt;color:black">Arnold<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;color:black">Use the gsn_csm_contour(*) function to create the second plot, and then overlay:<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;color:black">> map1 = gsn_csm_contour_map(wks, data1, res1)<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;color:black">>map2 = gsn_csm_contour(wks,data2,res2)<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;color:black">>overlay(map1, map2)<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;color:black">This is demonstrated in a number of examples on the 'overlay plot' examples page.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;color:black"><a href="http://www.ncl.ucar.edu/Applications/overlay.shtml">http://www.ncl.ucar.edu/Applications/overlay.shtml</a><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;color:black">Will<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="color:black">From: </span></b><span style="color:black">"<a href="mailto:Arnold.Sullivan@csiro.au">Arnold.Sullivan@csiro.au</a>" <<a href="mailto:Arnold.Sullivan@csiro.au">Arnold.Sullivan@csiro.au</a>><br>
<b>Date: </b>Friday, 22 May 2015 11:23 AM<br>
<b>To: </b>"<a href="mailto:ncl-talk@ucar.edu">ncl-talk@ucar.edu</a>" <<a href="mailto:ncl-talk@ucar.edu">ncl-talk@ucar.edu</a>><br>
<b>Subject: </b>[ncl-talk] overlaying of two polar maps<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="color:black">Hi there,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black"> <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black">Since we are not allowed to use any gsn_csm_*_map plotting functions to create the 2<sup>nd</sup> input in overlay, so how can we overlay two polar maps? Any trick?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black"> <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black">Say the base is the Antarctic ice, and the second one is the mask both at polar region, and I would like to use the second plot overlay on to the first plot.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black"> <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black">Cheers,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black"> <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black">Arnold<o:p></o:p></span></p>
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<p style="line-height:10.0pt;calibri"><span style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:black"><br>
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