# Model Sequence has no display nodes

**URL:** <https://discourse.slicer.org/t/model-sequence-has-no-display-nodes/6098>\
**Category:** Support\
**Created:** [March 11, 2019, 5:03am UTC](https://discourse.slicer.org/t/model-sequence-has-no-display-nodes/6098 "2019-03-11T05:03:50Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![GerryG](https://avatars.discourse-cdn.com/v4/letter/g/a698b9/32.png) [@GerryG](https://discourse.slicer.org/u/GerryG)\
**Post date:** [March 11, 2019, 5:03am UTC](https://discourse.slicer.org/t/model-sequence-has-no-display-nodes/6098/1 "2019-03-11T05:03:50Z")

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Operating system: Linux Ubuntu 18.10  
Slicer version: 4.10.1

I have created a Sequence from a number of vtkUnstructuredGrid models and get the below error when I try to play in in Sequence Browser:  
virtual QColor qSlicerSubjectHierarchyModelsPlugin::getDisplayColor(vtkIdType, QMap\<int, QVariant\>&) const : No display node for model

The models can be seen in the 3D viewer when viewed as a model although I can’t get a slice view either.  
I’m sure this is something trivial that I have misunderstood.  
Thanks in advance

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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:** [March 11, 2019, 5:05am UTC](https://discourse.slicer.org/t/model-sequence-has-no-display-nodes/6098/2 "2019-03-11T05:05:44Z")

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> [@GerryG](#):
>
> I have created a Sequence from a number of vtkUnstructuredGrid models

How did you create the models?  
Did you create display nodes for the models as well?  
Did you put the display nodes in a sequence or just created a single display node and associated with the model sequence’s proxy node?

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<div class="post-metadata">

**Author:** ![GerryG](https://avatars.discourse-cdn.com/v4/letter/g/a698b9/32.png) [@GerryG](https://discourse.slicer.org/u/GerryG)\
**Post date:** [March 11, 2019, 5:27am UTC](https://discourse.slicer.org/t/model-sequence-has-no-display-nodes/6098/3 "2019-03-11T05:27:59Z")

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The models are a series of .vtu files. one for each time increment. They contain point data connected by cells and some scalars.  
Looking in the Data Module each ModelNode has a hidden associated DisplayNode. These are not something I actively created beyond importing the .vtu files.

 ![Screenshot%20from%202019-03-11%2013-23-37](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/2/3/23354533f093428978fd4dd7f5ae4717eacd417f.png)  
When creating the sequence the only option for importable nodes are the ModelNodes.  
How would I go about creating a DisplayNode?