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Re: IDL function to get area cover of polygon [message #73330 is a reply to message #73313]

Tue, 02 November 2010 16:55

penteado
Messages: 866
Registered: February 2018

Senior Member
Administrator

On Nov 2, 9:44 pm, Seb <g5s...@web.de> wrote:
> Hi,
>
> I have the longitude/latitude coordinates of a polygon, and I am
> looking for a function which calculates the area covered by the
> polygon (e.g. in km^2). I am sure there is a function like this but
> was unable to find it.
>
> Any advice is much appreciated.
>
> Cheers,
> Sebastian

If the polygon is small enough to make the surface curvature
negligible, you can convert lat/lon to x/y, and use poly_area() or an
IDLanROI.

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		Re: IDL function to get area cover of polygon By: JDS on Wed, 03 November 2010 17:06
		Re: IDL function to get area cover of polygon By: Seb on Wed, 03 November 2010 02:50
		Re: IDL function to get area cover of polygon By: penteado on Tue, 02 November 2010 16:55

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