<div dir="ltr"><div>NCL can directly plot data with 2-D coordinates, with best-quality results. Do not try to convert coordinates to 1-D before plotting, because that code is more complicated and results in a lower-quality plot. Please see several "curvilinear grid" examples on this page:</div><div><br></div><div> <a href="https://www.ncl.ucar.edu/Applications/plot_data_on_map.shtml">https://www.ncl.ucar.edu/Applications/plot_data_on_map.shtml</a><br></div><div><br></div><div>Also avoid "native grid" plots in the examples, unless you fully understand how they work. Also avoid all forms of regridding.</div><div dir="ltr"><br></div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Mon, Aug 17, 2026 at 6:10 AM Debasish Hazra 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"><div dir="ltr"><div>Hi,</div><div>I am trying to read a file which has latitude and longitude in 2 dimensions. I am using lat2d and lon2d to read it, but getting an error while trying to assign the coordinates to the variable of interest and plot.Attached is ncl script and output in text, Any help on this is appreciated.</div><div>Thanks</div><div>Debasish</div></div>
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