[GRASS-dev] How to create union of areas with isles

[Росен Матев]

I came up with something similar to v.overlay and the old buffer
module. I'm only concerned that it might be slow but I think we can
use a spatial index to improve it alot

On Tue, Aug 12, 2008 at 10:23 AM, Hamish <hamish_b at yahoo.com> wrote:
> Росен Матев wrote:
>> I'm almost done with the new v.buffer module, but I
>> need some help to finish it.
>> I have the following problem. Suppose we have several
>> line_pnts structs:
> ....
>> I.e. we have nice areas). How to create the map which
>> consists of  the union of those areas A,B,... (Most of the
>> times A,B,... will intersect each other)
>
> can you reuse v.overlay code for that?
>
> i.e. if you pass A and B into "v.overlay opt=or" do you get the
> result you want? islands should be respected that way.
>
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> Hamish
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