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Question

Finding if an object is within line

  • August 21, 2019
  • 4 replies
  • 16 views
S
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Hi,

 

I want to find out whether an object with certain coordinates (x3,y3), is within a region that connects two points of a line. See the image below.

 

I have a line between two points (X1,Y1) and (X2,Y2). I want to know if another object is intersected by that line. As the object is just a point, and my accuracy of the points is low, i want to put a buffer on its x/y co-ordinates of like 1m either side (so effectively a square), and see if that crosses it.

 

Is this possible in FME? If so... how?

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4 replies

deanhowell
Influencer
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  • deanhowellInfluencer
  • Influencer
  • 315 replies
  • August 21, 2019

Hello @sam2130, I would suggest looking at the Bufferer coupled to a SpatialRelator transformer.

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david_r
Celebrity
  • david_rCelebrity
  • 8394 replies
  • August 21, 2019

Hello @sam2130, I would suggest looking at the Bufferer coupled to a SpatialRelator transformer.

Agree, or using the GeographicBufferer, if necessary.

ebygomm
Influencer
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  • ebygommInfluencer
  • Influencer
  • 3427 replies
  • August 21, 2019

You could also look at a PointOnLineOverlayer - you can use a tolerance within this to account for the accuracy, or NeighbourFinder with a maximum distance

R
Is the criteria also that the point (X3,Y3) has to be between (X1,Y1),(X2,Y2)? If that's the case you also have to check that the point is between those 2 points. Otherwise a SpatialRelator would give a false result. If its enough with a intersecting than you can go with the answer above.

 

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