<div dir="ltr"><div><div>Did you look at any of the functions?<br><br></div>Click "Functions" ; Click "Alphabetical Listing"; Search 'area'<br><br></div>Keep going till you find something: Like .......<br><div><div><br><a href="http://www.ncl.ucar.edu/Document/Functions/Built-in/area_poly_sphere.shtml" target="_blank">http://www.ncl.ucar.edu/<wbr>Document/Functions/Built-in/<wbr>area_poly_sphere.shtml</a><br></div></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Feb 5, 2018 at 5:32 AM, Kunal Bali <span dir="ltr"><<a href="mailto:kunal.bali9@gmail.com" target="_blank">kunal.bali9@gmail.com</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><div><div><div>Dear NCL users,<br><br></div>I have coordinates such as <br>lonv = (/77.98,77.96,79.01,80.02,80.<wbr>98,81.57,81.98,83.01,84.00,83.<wbr>99,83.01,83.01,80.98,81.00,80.<wbr>01,79.64,79.63,79.01,77.98/)<br> <br>  latv = (/31.00,29.70,29.15,28.82,28.<wbr>43,28.01,27.98,27.47,27.38,28.<wbr>64,28.99,29.40,29.56,29.99,30.<wbr>05,30.01,30.61,30.64,31.00/)<br><br><br></div>from that, I am able to plot the polygon line e.g.<br><br><br><img src="cid:ii_jda76qwk0_16165f22b570bc3f" style="margin-right:0px" width="214" height="183"><br> <br><br></div>So, could anyone please let me know how to calculate the area (in km) of this polygon box?<br><br><br></div>thank you<br clear="all"><div><div><div><div><div><div><div class="m_-803635958625206016gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div>---<br></div><div>Kunal Bali<br></div><br><div><br></div><div><br></div><div><p style="margin:0px;border-collapse:collapse;font-family:Tahoma,Verdana;font-size:12px"><font color="#1F497D"><br></font></p></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div>
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