# multiple polylines after vtkStripper
**URL:** https://discourse.vtk.org/t/multiple-polylines-after-vtkstripper/1078
**Category:** Support
**Created:** [June 4, 2019, 10:23am UTC](https://discourse.vtk.org/t/multiple-polylines-after-vtkstripper/1078 "2019-06-04T10:23:08Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@sbucc](https://discourse.vtk.org/u/sbucc)
#### Post date: [June 4, 2019, 10:23am UTC](https://discourse.vtk.org/t/multiple-polylines-after-vtkstripper/1078/1 "2019-06-04T10:23:08Z")
I’m using vtkCutter followed by vtkStripper to get the intersection of a mesh with a plane, and it always returns multiple segments. I can easily ignore the very tiny ones (1-3 points), but sometimes it produces longer polylines, like in this image:
The blue and green segments are clearly contiguous (in fact there are bigger gaps in the green one), so why isn’t the stripper returning a single segment? Are there any settings that I can change in vtkStripper? And if the issue is the mesh, is there any preprocessing that I could apply to avoid the problem?
If it is any help, the green segment is in an area where I have applied vtkClipClosedSurface.
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### Author:  [@sbucc](https://discourse.vtk.org/u/sbucc)
#### Post date: [June 4, 2019, 6:22pm UTC](https://discourse.vtk.org/t/multiple-polylines-after-vtkstripper/1078/2 "2019-06-04T18:22:00Z")
I upgraded to vtk 8.9 (from 6.2, which is the version that ubuntu 16.04 installs), so now there is an option JoinContiguousSegments, but even with it enabled, I still get 2 segments.
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### Author:  [@lassoan](https://discourse.vtk.org/u/lassoan)
#### Post date: [June 10, 2019, 7:28pm UTC](https://discourse.vtk.org/t/multiple-polylines-after-vtkstripper/1078/3 "2019-06-10T19:28:40Z")
Increasing [MaximumLength](https://vtk.org/doc/nightly/html/classvtkStripper.html#a526aaeb5167f434063a37283a7e1f38b) may help, but for correct intersection computation (especially if you need to know what is inside and outside) you probably need to replace vtkStripper by [vtkContourTriangulator](https://vtk.org/doc/nightly/html/classvtkContourTriangulator.html).