geoinformatik.user wrote:

> 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?

A NeighbourhoodAggregator will probabely do the trick, but it depends a 
bit on what you want to do. Can you explain a bit more?
-- 
Hans van der Maarel
Red Geographics

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