# Plot boundary data 2D

**URL:** https://discourse.paraview.org/t/plot-boundary-data-2d/8488
**Category:** ParaView Support
**Created:** [November 25, 2021, 9:42am UTC](https://discourse.paraview.org/t/plot-boundary-data-2d/8488 "2021-11-25T09:42:17Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![GDt](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/g/7993a0/32.png) [@GDt](https://discourse.paraview.org/u/GDt)
#### Post date: [November 25, 2021, 9:42am UTC](https://discourse.paraview.org/t/plot-boundary-data-2d/8488/1 "2021-11-25T09:42:18Z")

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Hi,  
I try to extract boundary datas on a 2D mesh using “ExtractSurface” and “FeatureEdges” with only “boundary edges” selected. It returns all the edges of the mesh including those inside the mesh.  
How can i obtain only the edges on the boundary ?  
thanks.