Robert, Between Garry and Nils-Erik I think you have the correct answers here.
You can either use the AreaOnAreaOverlayer before the Dissolver or you could use the group-by option in Bufferer. Personally I think the AreaOnAreaOverlayer will be quicker. We're working on it but a group-by in Bufferer tends to be slower than we'd like. BTW - all FME processing is based on 'factories' and if you were using mapping files these are what you'd make use of. Transformers are an interpretation of these factories in a GUI environment - so for example both the Dissolver and Bufferer transformers make use of the PolygonDissolveFactory and any one transformer can make use of a number of factories. What I'm saying is that by using the Dissolver you are already using the PolygonDissolveFactory so you don't need to worry about it. A neat trick is to click a transformer and choose copy - then you can paste it into a text editor to see exactly how it is defined and which factories it uses. Regards, Mark Mark Ireland, Product Support Engineer Safe Software Inc. Surrey, BC, CANADA [EMAIL PROTECTED] http://www.safe.com Solutions for Spatial Data Translation, Distribution and Access > -----Original Message----- > From: garry_christoffersen [mailto:[EMAIL PROTECTED] > Sent: Tuesday, March 15, 2005 3:21 AM > To: [email protected] > Subject: [fme] Re: Merging Polys > > > > > Robert > > Heres one way to do this that I've done with ESRI shapefile. > > To your source dataset (lines) add ATTRIBUTECREATOR and add attribute > say TEMP and set to 1. > > Use a BUFFERER and set the "groupby" to the attribute created above eg > TEMP. > > Write to a destination format of polygon ... should do the trick. > > Garry > > --- In [email protected], [EMAIL PROTECTED] wrote: > > > > > > Good afternoon FME Users. > > > > I'm trying to merge polys together. I see a transformer > AGGREGATOR, > > but it doesn't add the to areas together to form one poly. I'm > > looking for some kind of transformer to add areas together and > join > > their areas. I've also seen the DISSOLVER, but my results from > this > > transformer leave me with not much left to join the lines together > to > > form a new poly. > > > > Here is what I'm trying to do.....take lines and form polys with > the > > BUFFER transformer, from there I want to join the poly together > and > > form one poly. Does anyone have any ideas? I'm trying to > emulate the > > ArcMap's Buffer Wizard to automate this process. > > > > Thanks, > > > > Robert > > > > > > > > > Get the maximum benefit from your FME, FME Objects, or SpatialDirect > via our Professional Services team. Visit www.safe.com/services for > details. > Yahoo! Groups Links > > > > > > > > Get the maximum benefit from your FME, FME Objects, or SpatialDirect via our Professional Services team. Visit www.safe.com/services for details. Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/fme/ <*> 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/
