# Mapping and patching error in VMTK

**URL:** https://discourse.slicer.org/t/mapping-and-patching-error-in-vmtk/43002
**Category:** VMTK
**Created:** [May 19, 2025, 1:39pm UTC](https://discourse.slicer.org/t/mapping-and-patching-error-in-vmtk/43002 "2025-05-19T13:39:29Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![marina\_de\_santis](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/marina_de_santis/32/80241_2.png) [@marina\_de\_santis](https://discourse.slicer.org/u/marina_de_santis)
#### Post date: [May 19, 2025, 1:39pm UTC](https://discourse.slicer.org/t/mapping-and-patching-error-in-vmtk/43002/1 "2025-05-19T13:39:29Z")

</div>

Hello everyone,  
I’m having some trouble with the mapping and patching tutorial. I’ve followed all the steps, but at the end when I try to visualize the plane and angular subdivision, the grid shows some holes. I’ve tried to smooth and resample the centerline and to work on each single branch separately, but I can’t solve this problem.  
Do you have any suggestion?

 ![Screenshot 2025-05-19 alle 15.11.44](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/4/7/471a70778555a0b501ce4255b44f53c0736788cb.png)