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shapefile with holes (islands) in it

Hi Heinrich,

I'll try to do a test polygon here and see if I can reproduce your problems with the holes. And I will check your sources.
 
Hi,

I just did a test and I am a bit surprised with the results.

I made a polygon in QGIS and added a ring to it to have a hole. See first picture.

I then read it into scenProc and export it back to shape to check how the tool read it. To my surprise it had made a seam already to remove the ring (like you did in your editor). See second picture.

In FSX the autogen created from this shapefile shows correctly with a gap inbetween. See third picture.
 

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Hi,

I see that for features with more than 1 hole, it does not work anymore. In that case you get weird polygons.

In QGIS I can't find a function like you used to remove the holes.
 
I'm using 'Global Mapper', it has such functionallity. It's quite well hided under a context menu and its called 'Create Single Vertex List Area From Selected Area(s) With Islands'
 
Hi Arno,
Mike from GlobalMapper support did a new build and it works perfectly, look at the screenshot.
GlobalMapper now removes islands by 'chopping' the polygons as long as there are no more 'islands' left. Maybe you can do the same in scenProc.

FSX now has no problems with this chopped polygons.

Regards,
Heinrich
 

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Hi,

Good to hear it is working. I guess I have to do the same when I support shapefiles with holes indeed.
 
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