# vtkImageAppend and image origin

**URL:** https://discourse.vtk.org/t/vtkimageappend-and-image-origin/7327
**Category:** Support
**Created:** [December 3, 2021, 2:06pm UTC](https://discourse.vtk.org/t/vtkimageappend-and-image-origin/7327 "2021-12-03T14:06:34Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![WailmerPail](https://discourse.vtk.org/user_avatar/discourse.vtk.org/wailmerpail/32/3356_2.png) [@WailmerPail](https://discourse.vtk.org/u/WailmerPail)
#### Post date: [December 3, 2021, 2:06pm UTC](https://discourse.vtk.org/t/vtkimageappend-and-image-origin/7327/1 "2021-12-03T14:06:34Z")

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Hi Teams,

I want to stack different 3d-images together. I understand that this class cannot support images with different spacing, but I found that it also does not support the origin of images.

The z-order of the images is in accordance with the order of adding these images (and there will be no padding on the other two axes).

So I want to ask how to implement this function in vtk?  
That is, make multiple different 3d-images stacked together according to their origin and padding automatically.

Do I need to create a new vtkImageData and fill them in by coordinates?  
I think slicer has such a function, but I have checked the source code for a long time and I can’t find how it is implemented.

Thank you!

Best regards.