Hi Reed, I don't see that happening with the Closer. I start with.. (10,10) (10,0) (0,0) (0,10) and end with... (10,10) (10,0) (0,0) (0,10) (10,10)
The Logger and Visualizer transformers confirm this for me. I wonder if it is to do with the format you are writing? How are you determining the start point? Within FME or elsewhere? Mark Mark Ireland, Senior Product Specialist Safe Software Inc. Surrey, BC, CANADA [EMAIL PROTECTED] http://www.safe.com Solutions for Spatial Data Translation, Distribution and Access --- In [email protected], "Reed Whittington" <[EMAIL PROTECTED]> wrote: > > Let me be more clear. These are 4 disjoint paths to get polygons from > the ordered lines NOT steps. Each one of these 4 paths makes polygons > as the end result. > > 1) LineCloser > > 2) GeometryCoercer (point) -> PointCollector (break on poly_id) > > 3) GeometryCoercer (polygon) > > 4) PolygonBuilder (group by poly_id) > > I would think that the LineCloser is the most strait forward way to > make a polygon from a set of lines that already form an ordered set of > edges. The documentation of LineCloser and @Close() states that it > simply adds the first point as the last point and makes a polygon. > This is not the behavior that I have seen. It seems that each one of > the transformers: LineCloser, PointCollector, GeometryCoercer, and > PolygonBuilder, do something to re-order the edges in the resulting > polygon to make the first edge not the one I gave it but the first > edge is almost always the edge that faces south. I suspect there is > common logic/code that while saving a polylgon the vertex closest to > the south west (min xy) is made the first vert in the polygon. > > Thanks for looking into this. > > Regards, Reed > 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/
