# How to use vtkImageReslice for vtkUnstructuredGrid
**URL:** https://discourse.vtk.org/t/how-to-use-vtkimagereslice-for-vtkunstructuredgrid/3847
**Category:** Support
**Created:** [July 24, 2020, 7:59am UTC](https://discourse.vtk.org/t/how-to-use-vtkimagereslice-for-vtkunstructuredgrid/3847 "2020-07-24T07:59:07Z")
**Posts on this page:** 8
**Page:** 1
### Author:  [@aldis](https://discourse.vtk.org/u/aldis)
#### Post date: [July 24, 2020, 7:59am UTC](https://discourse.vtk.org/t/how-to-use-vtkimagereslice-for-vtkunstructuredgrid/3847/1 "2020-07-24T07:59:07Z")
Dear VTK team,
I read the vtkUnstructuredGrid data from a file, and now I want to use vtkImageReslice to slice and extract it, but I did not find an example of how to use it. I hope Kind people can help me.
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### Author:  [@cory.quammen](https://discourse.vtk.org/u/cory.quammen)
#### Post date: [July 24, 2020, 3:57pm UTC](https://discourse.vtk.org/t/how-to-use-vtkimagereslice-for-vtkunstructuredgrid/3847/2 "2020-07-24T15:57:42Z")
`vtImageReslice` works on `vtkImageData`, but it does not work on `vtkUnstructuredGrid` data. You’ll want to use `vtkCutter` instead. See [https://ajpmaclean.github.io/web-test/site/Cxx/VisualizationAlgorithms/CutStructuredGrid/](https://ajpmaclean.github.io/web-test/site/Cxx/VisualizationAlgorithms/CutStructuredGrid/) for an example. It shows cutting a structured grid, but it should work for your `vtkUnstructuredGrid` as well.
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### Author:  [@aldis](https://discourse.vtk.org/u/aldis)
#### Post date: [July 31, 2020, 5:47am UTC](https://discourse.vtk.org/t/how-to-use-vtkimagereslice-for-vtkunstructuredgrid/3847/3 "2020-07-31T05:47:37Z")
Thank you for your answer.When I use vtkcutter, once I update him, he will have a segfault.Hope you can help me.
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### Author:  [@aldis](https://discourse.vtk.org/u/aldis)
#### Post date: [July 31, 2020, 5:49am UTC](https://discourse.vtk.org/t/how-to-use-vtkimagereslice-for-vtkunstructuredgrid/3847/4 "2020-07-31T05:49:20Z")
Thank you for your answer.When I use vtkcutter, once I update him, he will have a segfault.Hope you can help me.thank you very much
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### Author:  [@cory.quammen](https://discourse.vtk.org/u/cory.quammen)
#### Post date: [July 31, 2020, 2:35pm UTC](https://discourse.vtk.org/t/how-to-use-vtkimagereslice-for-vtkunstructuredgrid/3847/5 "2020-07-31T14:35:39Z")
Sorry, but you have not provided nearly enough information to provide any help. Sharing your code would be very helpful.
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### Author:  [@aldis](https://discourse.vtk.org/u/aldis)
#### Post date: [August 1, 2020, 5:56am UTC](https://discourse.vtk.org/t/how-to-use-vtkimagereslice-for-vtkunstructuredgrid/3847/6 "2020-08-01T05:56:15Z")
My code is as follows
```
vtkSmartPointer uids =input_data();
```
/\*I set my own settings to read the vtkunstructedgrid function, which can be displayed normally through mapper \*/
```
vtkSmartPointer plane =
vtkSmartPointer::New();
plane->SetOrigin(0,0,0);
plane->SetNormal(1,0,0);
vtkSmartPointer cutter = vtkSmartPointer::New();
cutter->SetInputData(0,uids);
cutter->GenerateCutScalarsOff();
cutter->SetCutFunction(plane);
cutter->Update();//An error occurred when running to this point
vtkSmartPointermappers=vtkSmartPointer::New();
mappers->SetInputData(uids);
mappers->AddClippingPlane(plane);
vtkSmartPointer actor1 = vtkSmartPointer::New();
actor1->SetMapper(mappers);
vtkSmartPointer ren = vtkSmartPointer::New();
ren->AddActor(actor1);
vtkSmartPointer renWin = vtkSmartPointer::New();
renWin->AddRenderer(ren);
vtkSmartPointer iren = vtkSmartPointer::New();
iren->SetRenderWindow(renWin);
renWin->Render();
iren->Start();
```
I hope you can help me，Thank you very much.
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### Author:  [@cory.quammen](https://discourse.vtk.org/u/cory.quammen)
#### Post date: [August 3, 2020, 2:23pm UTC](https://discourse.vtk.org/t/how-to-use-vtkimagereslice-for-vtkunstructuredgrid/3847/7 "2020-08-03T14:23:25Z")
I don’t see anything obviously wrong in the code. Could you provide a stack trace where the program crashes?
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### Author:  [@aldis](https://discourse.vtk.org/u/aldis)
#### Post date: [August 5, 2020, 2:16am UTC](https://discourse.vtk.org/t/how-to-use-vtkimagereslice-for-vtkunstructuredgrid/3847/8 "2020-08-05T02:16:14Z")
Thank you very much for your help. Now I have found out the reason is because of the problem of my data. At present, the modified data can realize the column. Thanks