# Sequence of many vtk files

**URL:** <https://discourse.slicer.org/t/sequence-of-many-vtk-files/9788>\
**Category:** Support\
**Created:** [January 13, 2020, 1:01am UTC](https://discourse.slicer.org/t/sequence-of-many-vtk-files/9788 "2020-01-13T01:01:28Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![jeonb](https://avatars.discourse-cdn.com/v4/letter/j/f1d935/32.png) [@jeonb](https://discourse.slicer.org/u/jeonb)\
**Post date:** [January 13, 2020, 1:01am UTC](https://discourse.slicer.org/t/sequence-of-many-vtk-files/9788/1 "2020-01-13T01:01:28Z")

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Hi 3D Slicer community members,

I am new to 3D slicer, and any advice will be appreciated.  
I am trying to play animation of many vtk files (\*.vtu), made from ParaView. Each VTU file contains x/y/z nodes, grids (structured grids) and density data.  
I loaded them in Sequence extension and tried to run animation from Sequence browser but I found that all of them overlapped in the space, not showing any difference b/w frames.

In ParaView, when I load many VTK files, they are arranged along time steps of file names, and animation is relatively automatic. In 3DSlicer, will I need extra pre-steps or VTK is not recommended for making animations? Any comments are appreciated.

Thanks,

Byoungseon

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**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [January 13, 2020, 5:06am UTC](https://discourse.slicer.org/t/sequence-of-many-vtk-files/9788/2 "2020-01-13T05:06:40Z")

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After you loaded all the files into the scene, you can create a sequence from them by following these steps: [https://www.slicer.org/wiki/Documentation/Nightly/Extensions/Sequences#Creating\_sequences\_from\_a\_set\_of\_nodes](https://www.slicer.org/wiki/Documentation/Nightly/Extensions/Sequences#Creating_sequences_from_a_set_of_nodes)

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<div class="post-metadata">

**Author:** ![jeonb](https://avatars.discourse-cdn.com/v4/letter/j/f1d935/32.png) [@jeonb](https://discourse.slicer.org/u/jeonb)\
**Post date:** [January 14, 2020, 3:37am UTC](https://discourse.slicer.org/t/sequence-of-many-vtk-files/9788/3 "2020-01-14T03:37:07Z")

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Dear Andras,

Thanks for the instruction. I followed those steps but still they don’t show animation - just overlapped grids or cells. Following images are the steps I used - they match with the instruction, I guess:

 ![sample01](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/8/7/872616b7384a21feee4c4d549eca0cf9b8ee1130.png)  
 ![sample02](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/e/4/e40348847c1519693a48ba6eba78170b8f05bca8.png)  
 ![sample03](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/f/f/ffa4ec80fdb084d2c41087c936750e6c4588831e.png)

Other details are:

- They are VTU files (produced from ParaView), and loaded as model. If I try to load as volume, it is not recognized.
- From Models module, all models are visible, and this might be why all grids are overlapped - to make animations, sequence may have to make each one visible while others are not visible. Such changes are done automatically or need to be done manually? If manual, how I can adjust each sequence? I tried to record from ModelDisplay in Proxy node of SequenceBrowser, but it is not clear to me how each frame (or snapshot) can be adjusted.
- The OS is ubuntu 16 and I am using 3DSlicer 4.10.2.  
Any comments are appreciated.

Best regards,

Byoungseon