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| GeoCommunity Mailing List |
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| Mailing List Archives |
| Subject: | Re: [gislist] simplify polygons to 4 points |
| Date: |
02/24/2005 08:30:01 AM |
| From: |
Bill Thoen |
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On Wed, 23 Feb 2005, John Callahan wrote:
> This might sound strange but I am looking for a tool (extension,
> algorithm, etc...) that simplifies multi-vertex (5+) polygons to only 4
> points. An example would be to imagine you had building footprints for
> a town. And all you need is a rectangle to represent each building. It
> would be nice if the rectangle had the same general orientation and size
> as the building footprint.
If the polygons are relatively rectangle-shaped already, you might just
run a line thinning process over them. Google for the Douglas-Peucker
line thinning algorithm if you need to build a tool for this.
- Bill Thoen
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