# 'vtkSlicerMarkupsModuleMRML.vtkMRMLMarkupsDisplayNo' object has no attribute 'SetSliceDisplayModeToProjection'

**URL:** https://discourse.slicer.org/t/vtkslicermarkupsmodulemrml-vtkmrmlmarkupsdisplayno-object-has-no-attribute-setslicedisplaymodetoprojection/24348
**Category:** Support
**Tags:** python
**Created:** [July 17, 2022, 5:43am UTC](https://discourse.slicer.org/t/vtkslicermarkupsmodulemrml-vtkmrmlmarkupsdisplayno-object-has-no-attribute-setslicedisplaymodetoprojection/24348 "2022-07-17T05:43:40Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![jumbojing](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/jumbojing/32/10811_2.png) [@jumbojing](https://discourse.slicer.org/u/jumbojing)
#### Post date: [July 17, 2022, 5:43am UTC](https://discourse.slicer.org/t/vtkslicermarkupsmodulemrml-vtkmrmlmarkupsdisplayno-object-has-no-attribute-setslicedisplaymodetoprojection/24348/1 "2022-07-17T05:43:40Z")

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![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/8/b/8bdcd81fd395af3e01c0c2b528ba8ad6808e1858.png)  
what’s wrong?

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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: [July 17, 2022, 7:25am UTC](https://discourse.slicer.org/t/vtkslicermarkupsmodulemrml-vtkmrmlmarkupsdisplayno-object-has-no-attribute-setslicedisplaymodetoprojection/24348/2 "2022-07-17T07:25:55Z")

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As the error message states, there is no such method. It is only available in model display nodes. See what projection options are available for markups in the [markups display node documentation](http://apidocs.slicer.org/master/classvtkMRMLMarkupsDisplayNode.html).

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### Author: ![jumbojing](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/jumbojing/32/10811_2.png) [@jumbojing](https://discourse.slicer.org/u/jumbojing)
#### Post date: [July 17, 2022, 7:58am UTC](https://discourse.slicer.org/t/vtkslicermarkupsmodulemrml-vtkmrmlmarkupsdisplayno-object-has-no-attribute-setslicedisplaymodetoprojection/24348/3 "2022-07-17T07:58:43Z")

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`dn.SliceProjectionOn()`

> [@lassoan](#):
>
> 如错误消息所述，没有此类方法。它仅在模型显示节点中可用。在标记[显示节点文档中](http://apidocs.slicer.org/master/classvtkMRMLMarkupsDisplayNode.html)查看哪些可用于标记的投影选项。

Thanks