[Proj] Snyder ISEA

[Lili Zhang]

Strebe,
    Many thanks for your reply.
    
	The acronym ISEA stands for icosahedral Snyder equal area.

    I got to know ISEA at the website: http://www.sou.edu/cs/sahr/dgg/isea/isea.html

    I am doing some work on hierarchical spatial partitioning method on the ellipsoid suface with equal erea.  

    So ,the paper An equal-area map projection for polyhedral globes maybe is very important for me. 

    Is there any resource code that implemented Snyder's equal-area map projection ?

======= 2005-10-18 23:46:25£º=======

>Snyder described at least three methods for creating customizable equal-area 
>projections, as well as an equal-area projection for arbitrary polyhedral 
>faces. I'm not aware of any of them called "ISEA".
>
>See:
>
>"Optimizing equal-area map projections using least squares", American 
>Congress on Surveying and Mapping, Reno, ASPRS-ACSM 1987 Fall Convention, ACSM 
>Technical Papers, p. 5-13.
>
>"An equal-area map projection for polyhedral globes," Cartographica, Vol. 29, 
>No. 1, Spring 1992, pp. 10-21.
>
>"New equal-area map projections for noncircular regions," The American 
>Cartographer, Vol. 15, No. 4, October 1988, pp. 341-355.
>
>"Minimum-error equal-area map projections," (with John A. Dyer), The American 
>Cartographer, Vol. 16, No. 1, 1989, pp. 39-43.
>
>
>Regards,
>daan Strebe
>
>
>In a message dated 10/18/05 09:53:13, zhangli at supermap.com writes:
>
>> Hi,
>>    Does someone know?Snyder Equal Area (ISEA) projection?   Or where can I 
>> find some information about this projection ?
>> 
>>    Any suggestions is appreciated.
>>   
>>    Thanks.
>> 
>> 
>> 
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¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡Lili Zhang
¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡zhangli at supermap.com
¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡2005-10-19