Re: [Geotools-gt2-users] how to calculate area of a polygon by coordinates

[Michael B. <mic...@gm...>]

Hello Thiago,

> In this sample, works only for South America, right ?

Yes. I chose an equal-area CRS that covered Brazil for the example.

> This link
> http://svn.geotools.org/trunk/modules/plugin/epsg-extension/src/main/resources/org/geotools/referencing/factory/epsg/esri.properties
> contains many ESRI.
> Each line belongs to a location on the globe?

Yes that's right. But not all of those are equal-area projections
which is the type that you want to use for your application.

You can also search sites such as spatialreference.org to find useful
projections...

http://spatialreference.org/ref/?page=1&search=equal+area

Michael