Hi Jody,
Yes, I have looked at the wiki! The wiki only mentions the "touches"
relationship. It doesn't show you how to extract this "touches" property in
the shapefile. So, I need to know how to find out from a shapefile if two
polygons are touching. This is the question that I am trying to answer.
Another question, what is the difference between a 4 points ploygon and a 5?
Polygon p1 = createPolygon("0 0,1 1,2 2,0 0");// 4 points
Polygon p2 = createPolygon("0 0,5 0,5 5,0 5,0 0"); // 5 points
Thanks,
Ahmed
On Tue, Mar 23, 2010 at 8:23 AM, Jody Garnett <[email protected]>wrote:
> Have a look at the graph page in the wiki; you can define your own
> relationship test when building the graph; and in this case you may want to
> use geometry.touches( geometry2 ) ?
> On 23/03/2010, at 3:55 PM, Ahmed Abdeen Hamed wrote:
>
> > Hello friends,
> > I am composing a graph from a shapefile and trying to connect the nodes
> via edges that represent "adjacent_to" or "neighbor_of" relationships. I
> believe this information is already built-in the map but do I have to infer
> it to compose the graph? Are there some examples that can be looked at? My
> features are read as MultiPolygon.
> > Thanks very much!
> > Ahmed
> >
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