<div dir="ltr">Hello:<div><br></div><div>You can always plot point data, interpolating it to a grid.</div><div><br></div><div>Perhaps this will help...?</div><div><br></div><div><a href="https://www.ncl.ucar.edu/Document/Functions/Built-in/linint2_points.shtml">https://www.ncl.ucar.edu/Document/Functions/Built-in/linint2_points.shtml</a><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Dec 21, 2020 at 7:44 PM xiaoming Hu via ncl-talk <<a href="mailto:ncl-talk@mailman.ucar.edu">ncl-talk@mailman.ucar.edu</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">




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Because there are missing values in the 2d latitude and longitude,  the contour plot did not work.
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So I have to cut off the area with the missing coordinate variables by <br>
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  LST = f->visible_count(78:730,365:998)
<div>  LST@lat2d = latitude(78:730,365:998)</div>
<div>  LST@lon2d = longitude(78:730,365:998)</div>
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But by doing so, I miss a lot of useful data. </div>
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Anyway to plot the full data?   My full script is attached<br>
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A sample data file: <a href="http://www.caps.ou.edu/micronet/SouthernOcean/Observation/satellite.SATCORPS_V2.2_HIMAWARI-8.2km.201802170000.NC" id="gmail-m_-5350089625216048011LPlnk972809" target="_blank">
http://www.caps.ou.edu/micronet/SouthernOcean/Observation/satellite.SATCORPS_V2.2_HIMAWARI-8.2km.201802170000.NC</a><br>
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The domain I want to plot on: <a href="http://www.caps.ou.edu/micronet/SouthernOcean/Observation/wrfout_d01_2018-02-18_20:00:00" id="gmail-m_-5350089625216048011LPlnk868408" target="_blank">
http://www.caps.ou.edu/micronet/SouthernOcean/Observation/wrfout_d01_2018-02-18_20:00:00</a><br>
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<span id="gmail-m_-5350089625216048011" title="">BTW: this script works very slow even when I cut off the area with missing coordinate.
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<span id="gmail-m_-5350089625216048011" title="">Thanks</span> a lot!</div>
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Xiaoming Hu<br>
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