<div dir="ltr"><div><div>Hi Jinwoong,<br><br></div>There's an undocumented interface in NCL to the Proj4 cartographic projection library, which could be used to project your lat/lon grid into a cylindrical equal-area grid. Its simple to use, but requires direct knowledge of proj4. If you can provide me your lat/lon grid, I can try to put together an example of how to do the reprojection.<br><br></div>Rick<br><br></div><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Jun 18, 2015 at 4:59 PM, Jinwoong Yoo <span dir="ltr"><<a href="mailto:jinwoongyoo@unm.edu" target="_blank">jinwoongyoo@unm.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr">
<div style="font-size:12pt;color:#000000;background-color:#ffffff;font-family:Calibri,Arial,Helvetica,sans-serif">
<p>Hi,<br>
</p>
<p><br>
</p>
<p>I would like to regrid my lat-lon grid to cylindrical equal area grid using NCL (ESMF-regrid). It is not just for the graphical purpose but for the purpose of calculating area by counting pixels. So just plotting my lat-lon data onto the cylidrical equal
area projection is not an issue here, which can be solved referencing "<a href="https://www.ncl.ucar.edu/Document/Graphics/Scripts/ncl_map_projections.ncl" target="_blank">https://www.ncl.ucar.edu/Document/Graphics/Scripts/ncl_map_projections.ncl</a>".<br>
</p>
<p><br>
</p>
<p>I guess I need a sample nc file in <span style="font-family:Calibri,Arial,Helvetica,sans-serif,'Apple Color Emoji','Segoe UI Emoji',NotoColorEmoji,'Segoe UI Symbol','Android Emoji',EmojiSymbols;font-size:16px;background-color:rgb(255,255,255)">the
cylidrical equal area projection</span> as a destination file to generate a weight file for ESMF-regrid.<br>
</p>
<p>Please correct me if I'm wrong.<br>
</p>
<p>Or if anybody knows how to do the job or where to get the "<span style="font-family:Calibri,Arial,Helvetica,sans-serif,'Apple Color Emoji','Segoe UI Emoji',NotoColorEmoji,'Segoe UI Symbol','Android Emoji',EmojiSymbols;font-size:16px;background-color:rgb(255,255,255)">destination
file</span>" , please let me know.<br>
</p>
<p><br>
</p>
<p>Thank you.<br>
</p>
<p><br>
</p>
<p>Jinwoong Yoo<br>
</p>
<p>UNM<br>
</p>
</div>
</div>
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<br></blockquote></div><br></div>