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Question

Buffer around outside of polygon

  • January 15, 2015
  • 3 replies
  • 135 views

Hi!

 

 

I am trying to buffer around a polygon with the buffer measuring 1km from the edge of the polygon rather from the centre? How best can I achieve this please?

 

 

Thank you!
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3 replies

  • January 15, 2015
Hi Hannah,

 

 

I believe the Bufferer transformer in FME uses the boundary (and not the center) of the input geometry to expand or shrink the geometry by the amount you specify. So I think that transformer is already suited for your task!  

david_r
Celebrity
  • January 15, 2015
Hi,

 

 

the Bufferer automatically extends from the edge, not from the centre. Example:

 

 

 

 

The inner polygon has been buffered 1000m.

 

 

Be aware that the buffer amount is specified in ground coordinate units.

 

 

David

  • Author
  • January 15, 2015
Thanks! All sorted now :-)