[GRASS5] Multiple attribute support in GRASS 5.1:someconsiderations (long)

[Eric G. Miller]

On Mon, May 14, 2001 at 10:12:41AM +0200, Radim Blazek wrote:
> Everybody is welcome. David is working on spatial related tasks.
> I thing that you could start work on spatial operation (overlay) functions.
> We have only dig_point_in_area() in g50 and we need ALL spatial operations
> between ALL element types. Have you any ideas?

Radim,
	I've been looking at the spatial operations subject.  I've
found at least one polygon algorithm that should handle all of the set
operations (intersect, union, etc..).  I'm working towards fully
understanding how to implement it.  I've also been looking at some of
the others like clipping lines with polygons (possibly resulting in
multiple lines).  With a little more study I think I'll be ready to
start implementing these things.

-- 
Eric G. Miller <egm2 at jps.net>

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