# How to import obj with the correct projection

**URL:** <https://community.cesium.com/t/how-to-import-obj-with-the-correct-projection/7944>\
**Category:** CesiumJS\
**Created:** [January 25, 2019, 11:05pm UTC](https://community.cesium.com/t/how-to-import-obj-with-the-correct-projection/7944 "2019-01-25T23:05:36Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![bmwyss](https://avatars.discourse-cdn.com/v4/letter/b/a6a055/32.png) [@bmwyss](https://community.cesium.com/u/bmwyss)\
**Post date:** [January 25, 2019, 11:05pm UTC](https://community.cesium.com/t/how-to-import-obj-with-the-correct-projection/7944/1 "2019-01-25T23:05:36Z")

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I am using [cesium.com/ion](http://cesium.com/ion) to upload an .obj file (created from laz). It says that the “tileset location has not been set”. Is there a way to geo-reference an obj file using a header or a .prj file?

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**Author:** ![omar](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/omar/32/1999_2.png) [@omar](https://community.cesium.com/u/omar)\
**Post date:** [January 28, 2019, 4:49pm UTC](https://community.cesium.com/t/how-to-import-obj-with-the-correct-projection/7944/2 "2019-01-28T16:49:18Z")

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Right now, you can click on “Adjust tileset location” in the top right when selecting the asset in your dashboard on ion, and there you can position it on the globe (with a combination of geocoding and positioning by hand).

Cesium ion is pretty new and we’re working on improving it in all sorts of ways, so if you have ideas for features/better workflows, you can post them here:

> **[CesiumGS/cesium-ion-community](https://github.com/CesiumGS/cesium-ion-community/issues)**
>
> Feature requests, bug reports, and support questions for Cesium ion :earth\_americas: - CesiumGS/cesium-ion-community

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**Author:** ![bmwyss](https://avatars.discourse-cdn.com/v4/letter/b/a6a055/32.png) [@bmwyss](https://community.cesium.com/u/bmwyss)\
**Post date:** [January 28, 2019, 5:33pm UTC](https://community.cesium.com/t/how-to-import-obj-with-the-correct-projection/7944/3 "2019-01-28T17:33:33Z")

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Thanks for reply, I would love to automate this step. I am guessing that when one changes the location of the feature using the 3D Tiles Location Editor, behind the scenes, the tileset.json is being altered, if this is the case an explanation of this step would helpful.

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**Author:** ![a.okeefe289](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/a.okeefe289/32/14037_2.png) [@a.okeefe289](https://community.cesium.com/u/a.okeefe289)\
**Post date:** [October 16, 2024, 9:45am UTC](https://community.cesium.com/t/how-to-import-obj-with-the-correct-projection/7944/4 "2024-10-16T09:45:22Z")

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Has any more progress been made on this? I’m uploading an obj with a proj file and it still says ‘tileset location not set’, yet it appears on the map in other GIS software

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**Author:** ![Luke\_McKinstry](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/luke_mckinstry/32/25557_2.png) [@Luke\_McKinstry](https://community.cesium.com/u/Luke_McKinstry)\
**Post date:** [October 28, 2024, 6:07pm UTC](https://community.cesium.com/t/how-to-import-obj-with-the-correct-projection/7944/5 "2024-10-28T18:07:19Z")

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Hi @a.okeefe289,  
Thanks for your post and being part of the Cesium community. Apologies for the slow response to your post.

Since the earlier posts in this thread were written we have added new general documentation for specifying the location of uploaded data in Cesium ion [Set Location for Data Uploaded to Cesium ion – Cesium](https://cesium.com/learn/3d-tiling/ion-tile-set-location/).

If this guide does not help resolve the issues you are having with your data, if you could let us know and share more details about the files you are working to upload, we would be happy to help.

Thanks,  
Luke