Bryan, > Problem: Some external data producers are sending us road data where > they have unioned the road polygons together, creating lots of donuts > between the roads (and polygons with 15000 or so verticies - ick). The > viewer application (based on Oracle Spatial data) does not currently > handle voids (donuts), so the road fill flows into the voids, causing > the map to look bad. > > Q: What might others suggest to "de-donut" the data? > > I have been looking at the manual and it looks like some combination of > Intersector and AreaBuilder might do the trick to turn the monster > polygon back into a semblance of individual road segment polygons.
I created a "DonutKiller" custom transformer last year (see http://www.fmepedia.com/index.php/DonutKiller), which attempts to do this, but its results aren't very good when you put very complicated polygons in it (such as the ones you're describing...). However, it might give you an idea of what is necessary for this. -- Hans van der Maarel Red Geographics Zevenbergsepoort 44b www.redgeographics.com 4791 AE Klundert [EMAIL PROTECTED] The Netherlands phone: +31-168-401035 For insights into what's up at Safe Software and what's on the development horizon, visit Safe's blog at spatial-etl.blogspot.com. Safe Software has also made slides available that outline enhancements planned for FME 2007. The slides are from the "Road Ahead" presentation given on Day 2 of the FME Worldwide Users Conference. To view these slides, visit www.safe.com/2006uc. Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/fme/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/fme/join (Yahoo! ID required) <*> To change settings via email: mailto:[EMAIL PROTECTED] mailto:[EMAIL PROTECTED] <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
