[ncl-talk] calculate area of polygon box

[Kunal Bali]

Dear NCL users,

I have coordinates such as
lonv =
(/77.98,77.96,79.01,80.02,80.98,81.57,81.98,83.01,84.00,83.99,83.01,83.01,80.98,81.00,80.01,79.64,79.63,79.01,77.98/)

  latv =
(/31.00,29.70,29.15,28.82,28.43,28.01,27.98,27.47,27.38,28.64,28.99,29.40,29.56,29.99,30.05,30.01,30.61,30.64,31.00/)


from that, I am able to plot the polygon line e.g.





So, could anyone please let me know how to calculate the area (in km) of
this polygon box?


thank you
---
Kunal Bali
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