My suggestion would be to handle it in a non-spatial form and run it through a GlobalVariableRetriever - Tester - GlobalVariableSetter combo.
GVRetriever - retrieve a global (say GV1) Tester - test if Z = GV1 (if so discard the feature) GVSetter - set the global GV1 = Z You get the idea? Each feature sets the global and then the following one gets tested to see if it is the same. After the above three add a group-based transformer such as the FeatureHolder (in 2007) or maybe a Sorter (in earlier versions). That should ensure that features pass through the above 3 transformers one at a time, but then go no further until they've all been processed. That would remove duplicate features. To get within a definable range you'd need to calculate the difference with an expressionEvaluator before testing to see if the EE result is < defined range Hope this helps Mark Mark Ireland, Senior Product Specialist Safe Software Inc. Surrey, BC, CANADA support@ http://www.safe.com Solutions for Spatial Data Translation, Distribution and Access --- In [email protected], "geoinformatik.user" <[EMAIL PROTECTED]> wrote: > > Hello List, > > as a FME beginner I despair of the following problem and hope that > one of you can help. > > I have a text file (2000000 lines) with the following contents: > > x y z > 4418000.000 5655055.680 216.850 > 4428001.000 5655055.680 216.820 > 4428003.000 5655055.680 216.830 > 4428000.000 5655056.680 216.590 > 4438002.000 5655056.680 216.830 > 4433003.000 5655056.680 216.830 > 4428000.000 5655058.680 218.590 > 4438001.000 5655058.680 216.510 > 4433003.000 5655058.680 214,830 > > Now I want to find neighbouring points with the same height (z) > and/or points with a definable deviation of the height (z) and > generalize this. > > Can you recommend a Transformer? > > Thank you > Sven > 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/
