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Spatial relationship of lines between two networks

  • February 27, 2017
  • 1 reply
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I have 2 networks of roads in the same geographical area (these are the same roads) with totally different sources of geometric data. So the same roads do not have the same geometry and no common identifier.

 

How do I transfer attributes from one network to another?

 

Thank you

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    1 reply

    david_r
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    • david_rCelebrity
    • February 27, 2017

    This is a task that can range between fairly complex to maddeningly difficult, all depending on your data. When I've worked similar problems before I've started out with something like this:

    • Buffer one of the datasets
    • Intersect the buffered dataset with the non-buffered dataset
    • Calculate line length for each segment intersecting the buffer
    • Assume that the longest line segment inside the buffer is the one you're looking for

    You'll typically end up with quite a few false positives and negatives, but it'll give you a starting point which you can then further refine according to your situation. I'm sure there are other ways to attack this problem as well.

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