Date:         Tue, 4 Mar 2003 16:22:30 -0500
Reply-To:     Julia Brownlee <[log in to unmask]>
Sender:       Biological Conservation and GIS <[log in to unmask]>
From:         Julia Brownlee <[log in to unmask]>
Organization: NOAA
Subject:      Question
Content-Type: text/plain; charset=us-ascii

Good afternoon.

I would like to ask for your input and advise.

I have polygons for conservation sites located in Alaska, the lower 48,
Hawaii, USVI, Puerto Rico, Guam, American Samoa, and the Commonwealth of
the Northern Marianas Islands.  I want to calculate areas for these
sites.  I am currently working on the best method to use to calculate
the areas.

The biggest question to resolve is, do you pick one projection that
minimizes the distortion in all areas for a consistent data set or use a

different projection for each geographic location?  Either way, what is
the reccomended projection?  If you pick mutiple projections, how do
they relate to one another from the perspective on consistency?

Currently all of the data is in Geographic NAD 83.

Any thoughts would be greatly appreciated.

Feel free to either respond to the listserv or email me directly,
[log in to unmask]

Thank you and let me know, if you have any questions.

Cheers,
Julia Brownlee

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