On 12/30/05 9:01 PM, "Leo Hoedemaker" <leo.hoedemaker at gmx .D.O.T de> wrote:
Hi Leo,
>> Why you need R-trees or R+-trees indexes ?
>> Please describe your task and vision
>
> I would like to use R-trees for indexing spatial data (points, lines
> polygons etc). Personally, I'm in the process of planning some kind of GIS
> (geographical Information System) for storing animal distribution data.
>
> However, spatial data is also used for e.g. CAD or computer vision.
Yes right.
Okay so you have correct expectations :-)
Please add this feature request into Mantis.
> Basically, I would like to be able to store and retrieve spatial objects
> and get information like "find all points within a certain area" or "find
> all stored objects within 2 km of location x"
I see.
> Since most GIS programs store huge amounts of data, it would be very
> impractical to retrieve all data and peform a search, which would take
> ages. Therefor I would like to index my spatial data first.
>
> As far as I know, the most efficient way to index spatial objects is using
> some variety of R-trees (like the recently described Priority R-tree (Arge
> et al., 2004)).
Yes this is true.
You are first who ask about this kind of index. :-)
I cannot estimate right now timeline of this.
I need refresh my memory on how this index looks then I will decide how hard
todo this feature.
--
Best regards,
Ruslan Zasukhin
VP Engineering and New Technology
Paradigma Software, Inc
Valentina - Joining Worlds of Information
http://www.paradigmasoft.com
[I feel the need: the need for speed]
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