# vmtkbranchclipper error:vtkFloatArray

**URL:** <https://discourse.slicer.org/t/vmtkbranchclipper-error-vtkfloatarray/39854>\
**Category:** VMTK\
**Created:** [October 25, 2024, 3:28am UTC](https://discourse.slicer.org/t/vmtkbranchclipper-error-vtkfloatarray/39854 "2024-10-25T03:28:39Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![SARA\_DOSSENA](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/sara_dossena/32/78311_2.png) [@SARA\_DOSSENA](https://discourse.slicer.org/u/SARA_DOSSENA)\
**Post date:** [October 25, 2024, 3:28am UTC](https://discourse.slicer.org/t/vmtkbranchclipper-error-vtkfloatarray/39854/1 "2024-10-25T03:28:39Z")

</div>

Hi!  
I’m trying to follow the guide ‘Mapping and Patching’ on vmtk ([Mapping and Patching | vmtk - the Vascular Modelling Toolkit](http://www.vmtk.org/tutorials/MappingAndPatching.html)).  
When I run the the code 'vmtkbranchclipper -ifile aorta.vtp -centerlinesfile aorta\_cl.vtp -groupidsarray GroupIds -radiusarray MaximumInscribedSphereRadius -blankingarray Blanking -ofile aorta\_clipped.vtp` I recive this error  
‘ERROR: In …/Common/Core/vtkAOSDataArrayTemplate.txx, line 333  
vtkFloatArray (0x600002d9e3a0): Source array too small, requested tuple at index 96107, but there are only 96107 tuples in the array.’  
The command gives back a result, but I’m not sure that this problem doesn’t affect the next steps.  
I tried to ignore it but I couldn’t get results in the next steps.

Has anyone had the same problem? Thank you in advance  
Sara