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1

It requires and Advanced License (and according to the help 'with ArcInfo Workstation installed') but there is a tool called Collapse Dual Lines To Centerline in the Generalization tools that essentially does what you want. It does have similar issues in terms of complicated intersections (note the 'how it works' link at the top). To some degree any ...


1

The topology referred to has nothing to do with custom topology rules that you set up. It applies to all polygons whether any topology rules set up by the user exist or not. The simplification errors that are checked include the creation of new self-intersections and the collapse of parts of the polygon down to lines or points. It is not a bug, since the ...


1

I think a good way to minimize unneccessary traffic is to use a BBOX-Strategy: new OpenLayers.Layer.Vector("WFS", { strategies: [new OpenLayers.Strategy.BBOX()], protocol: new OpenLayers.Protocol.WFS({ url: "http://demo.opengeo.org/geoserver/wfs", featureType: "tasmania_roads", ...


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The name for this kink in a geometry is an "inversion". It is not a topology error per se (as explained in this answer), but it can be an indication of coordinate collapse (such as at the mouth of a harbor, etc.). I can't think of any elegant way to identify inversions. One possible solution (that I haven't tried) would convert the polygon rings to ...



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