# Split lines by other, overlapping, lines

**URL:** <https://forum.dynamobim.com/t/split-lines-by-other-overlapping-lines/44383>\
**Category:** Revit\
**Tags:** revit, dynamo\
**Created:** [December 12, 2019, 8:58am UTC](https://forum.dynamobim.com/t/split-lines-by-other-overlapping-lines/44383 "2019-12-12T08:58:44Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Daan](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/daan/32/82246_2.png) [@Daan](https://forum.dynamobim.com/u/Daan)\
**Post date:** [December 12, 2019, 8:58am UTC](https://forum.dynamobim.com/t/split-lines-by-other-overlapping-lines/44383/1 "2019-12-12T08:58:44Z")

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Hello everyone,

I have a lot of straight lines in my script which overlap. The problem with these lines is that i only need the part which does not overlap. Example:

 ![2019-12-12 Probleem](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/0/9/09c3c158e75c12f91673294871028b9f002f71cd.png)  
In this example i would only need the green lines (the blue/ red lines are already existing in two different Lists.)  
The red and blue lines overlap but it would be hard to show if i drew them overlapping 🙂

If someone knows how to filter this i would really appreciate that !  
Thanks in advance,  
Daan

(Example File in Dynamo:)  
[Dynamo Forum Post 2019-12-12 Overlapping Lines.dyn](https://forum.dynamobim.com/uploads/short-url/dtVu4k0oYlPuvXnTl3CwmC8HUCd.dyn) (30.2 KB)