On Jul 12, 12:05 pm, John S <[email protected]> wrote:
> I'm running into an issue that I'm not sure if there's a good approach
> to resolve. We have someone I work with that sends me shape files
> converted to KML, and I've written a wizard that'll import these into
> a wizard to create maps in a way that's as painless and I can hope
> for.
>
> Well one of the issues I'm running into is... We have a few cities
> that have cities in them. And we run into a few other areas where I
> need to create polygons that don't fill the entire inside area.
> Essentially I'd like to create a donut with outside lat/lng data and
> an inside ring(s) with lat/lng data. So far I haven't been able to
> find a way to do this, so I'm hoping someone on here might have an
> example.

You need to create the interior polygons (holes) with the opposite
winding as the outer polygon.
Example:
http://www.geocodezip.com/v3_polygon_example_donut.html

  -- Larry

>
> I've googled for this, but it's a pretty specific thing I'm looking
> for here, so I wouldn't be shocked if I'm missing it because my
> wording isn't exactly like it needs to be. Any advice that anyone
> could offer would be extremely helpful.

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