# Point cloud tile goes under 3D world terrain

**URL:** <https://community.cesium.com/t/point-cloud-tile-goes-under-3d-world-terrain/15246>\
**Category:** CesiumJS\
**Created:** [September 13, 2021, 6:55am UTC](https://community.cesium.com/t/point-cloud-tile-goes-under-3d-world-terrain/15246 "2021-09-13T06:55:20Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![sx\_dev](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/sx_dev/32/3476_2.png) [@sx\_dev](https://community.cesium.com/u/sx_dev)\
**Post date:** [September 13, 2021, 6:55am UTC](https://community.cesium.com/t/point-cloud-tile-goes-under-3d-world-terrain/15246/1 "2021-09-13T06:55:20Z")

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Hi Cesium team,

The issue as in the title, I’m guessing that it is caused by that the point cloud has the height relative to mean sea level.

If so, how could I adjust the z of the point cloud in order to show the point cloud upon 3D world terrain?

Any suggestion and correction is welcome.

Thanks in advance.  
Hiroshi

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**Author:** ![sam.rothstein](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/sam.rothstein/32/6584_2.png) [@sam.rothstein](https://community.cesium.com/u/sam.rothstein)\
**Post date:** [September 13, 2021, 8:43pm UTC](https://community.cesium.com/t/point-cloud-tile-goes-under-3d-world-terrain/15246/2 "2021-09-13T20:43:44Z")

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@sx_dev

Check out this sandcastle demo. It loads in two point clouds and updates their positions and orientation. I believe that the high value is also updated.

> **[Cesium Sandcastle](https://sandcastle.cesium.com/?src=3D%20Tiles%20Point%20Cloud%20Shading.html)**
>
> The Cesium Sandcastle provides an interactive environment for testing Cesium code.

You can use this demo as a guide when adding point clouds into your viewer. Let me know if you have any additional questions or concerns!

-Sam

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**Author:** ![Hiroshi\_Yaginuma](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/hiroshi_yaginuma/32/10887_2.png) [@Hiroshi\_Yaginuma](https://community.cesium.com/u/Hiroshi_Yaginuma)\
**Post date:** [July 5, 2022, 8:25am UTC](https://community.cesium.com/t/point-cloud-tile-goes-under-3d-world-terrain/15246/3 "2022-07-05T08:25:17Z")

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Hi Sam,  
Unfortunately, I couldn’t find any code that operates the height of the point cloud.

Could you indicate the code?