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<p style="margin-top:0;margin-bottom:0">Dave, <br>
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<p style="margin-top:0;margin-bottom:0">Thank you for your answer.</p>
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<p style="margin-top:0;margin-bottom:0">I'm just making plots at the moment.</p>
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<p style="margin-top:0;margin-bottom:0">Athansios<br>
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<pre>Athanasios F. Karagiannidis<br>Physicist, PhD Meteorology and Climatology<br>E-mail: thankar@live.com</pre>
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<div id="divRplyFwdMsg" dir="ltr"><font style="font-size:11pt" color="#000000" face="Calibri, sans-serif"><b>From:</b> Dave Allured - NOAA Affiliate <dave.allured@noaa.gov><br>
<b>Sent:</b> Tuesday, March 27, 2018 7:58 PM<br>
<b>To:</b> Athanasios Karagiannidis<br>
<b>Cc:</b> ncl-talk@ucar.edu<br>
<b>Subject:</b> Re: [ncl-talk] Assign 2d Lat Lon matrices as coordinates to a 2d variable matrix</font>
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<div dir="ltr">Athanasios,
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<div>For plotting fields with 2-D coordinate arrays, use one of these two methods. Attach the 2-D coordinates directly to the data variable, using these special attribute names:</div>
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<div><font face="monospace, monospace"> FR@lat2d = Lat ; (2-D)</font></div>
<div><font face="monospace, monospace"> FR@lon2d = Lon ; (2-D)</font></div>
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<div>Alternatively, attach the 2-D coordinates to the plot resource variable. The special attribute names are different in this method:</div>
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<div><font face="monospace, monospace"> res@sfYArray = Lat ; (2-D)</font></div>
<div><font face="monospace, monospace"> res@sfXArray = Lon ; (2-D)</font></div>
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<div>Please see section 2 on this page for more details and examples:</div>
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<a href="http://www.ncl.ucar.edu/Document/Graphics/overlays_on_map.shtml" id="LPlnk13195" previewremoved="true">
http://www.ncl.ucar.edu/Document/Graphics/overlays_on_map.shtml</a></div>
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<a id="LPUrlAnchor_15222312585660.1965771684916544" style="text-decoration: none;" href="http://www.ncl.ucar.edu/Document/Graphics/overlays_on_map.shtml" target="_blank">NCL Graphics: overlaying data on a map</a></div>
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www.ncl.ucar.edu</div>
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NCL Home > Documentation > Graphics Overlaying data on a map For some specific examples of plotting data on a map, see the "Plotting data on a map using gsn_csm_xxx ...</div>
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<div>There are many other examples on this page, listed directly under the names of these special attributes:</div>
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<div> <a href="http://www.ncl.ucar.edu/Applications/res_list.shtml" id="LPlnk156488" previewremoved="true">http://www.ncl.ucar.edu/Applications/res_list.shtml</a></div>
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<div>There is a different convention for writing self-contained Netcdf files to share with other people. Are you writing files, or just making plots?</div>
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<div>--Dave</div>
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<div class="x_gmail_quote">On Tue, Mar 27, 2018 at 10:42 AM, Athanasios Karagiannidis
<span dir="ltr"><<a href="mailto:thankar@live.com" target="_blank" id="LPlnk987368" previewremoved="true">thankar@live.com</a>></span> wrote:<br>
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<p class="x_MsoNormal"><span lang="EN-US">Dear all</span></p>
<p class="x_MsoNormal"><span lang="EN-US"> </span></p>
<p class="x_MsoNormal"><span lang="EN-US">Could someone help with the following: I have a 2d matrix of a variable (let’s call it FR), extracted from an hdf5 file. I get a 2d Lat matrix and a 2d Lon matrix from 2 other files. How can I assign these Lat and Lon
matrices as dimensions for FR? I need to point out here, that the grid in not regular.</span></p>
<p class="x_MsoNormal"><span lang="EN-US">I already thought about transforming FR, Lat, and Lon to a 1d matrices, and combining them to a single matrix with Lat, Lon and FR as the first, second and third column respectively. But I think it would be more elegant,
and less resource-consuming if I could just assign the Lat Lon matrices as coordinates to FR matrix.</span></p>
<p class="x_MsoNormal"><span lang="EN-US"> </span></p>
<p class="x_MsoNormal"><span lang="EN-US">Thank you in advance</span></p>
<p class="x_MsoNormal"><span lang="EN-US"> </span></p>
<p class="x_MsoNormal"><span lang="EN-US">Athanasios Karagiannidis</span></p>
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<pre>Athanasios F. Karagiannidis<br>Physicist, PhD Meteorology and Climatology<br>E-mail: <a href="mailto:thankar@live.com" target="_blank" id="LPlnk336037" previewremoved="true">thankar@live.com</a></pre>
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