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My scenario is that I have to ensure that all polygons going through a process have fewer than 2000 vertices. These polys can vary in size and complexity quite significantly. Districts, towns, counties...

  • October 5, 2020
  • 3 replies
  • 10 views
P
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I'm trying to build an expression in Generalizer's'tolerance' setting that address this in every scenario (I have a Tester for node count beforehand, so this will only have to deal with polys with 2000+ nodes). I assume it's related to the perimeter but I'm not getting very far.

 

Any suggestions gratefully received

 

Thanks

 

Paul

 

 

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3 replies

M
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  • markatsafe
  • October 5, 2020

@paulc1​  Chopper has the option to break polygons by vertex count. There is also a GridChopper on FME HUB that is useful for areas with a large extent

virtualcitymatt
Celebrity
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You could use the looping function in a customer transformer to slowly increase the generalisation? This might avoid trying to build a 'smart' expression​.

P
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  • paulc1
  • Author
  • October 6, 2020

You could use the looping function in a customer transformer to slowly increase the generalisation? This might avoid trying to build a 'smart' expression​.

ooh....good call.....

 

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