> For the complete documentation index, see [llms.txt](https://docs.overthereality.ai/over-sdk-manual/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.overthereality.ai/over-sdk-manual/sdk-editor/location/ovrmap-editor-settings.md).

# VPS - OVRMap

## What is an OVRMap?

When you place ('geolocalize') an AR object with GPS, the precision is usually no better than **about six meters**. An **OVRMap** is a 3D scan of a real place, made with the OVER app: with it the app places your objects with a precision of **about 20 centimeters**.

{% embed url="<https://ovr-assets.s3.eu-central-1.amazonaws.com/unity-sdk/videos/m2e-post.mp4>" %}

In the Editor, the OVRMap is shown as a **Gaussian Splat** model, so you can place your 3D objects exactly where they should be in the real place.

<figure><img src="https://123660717-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F6xdubHTzJACGqFIM7yJy%2Fuploads%2FAEC0hhx0z2L7Ub3rnPsF%2FEkran%20g%C3%B6r%C3%BCnt%C3%BCs%C3%BC%202024-10-24%20100437.png?alt=media&amp;token=ea247c8c-74e5-4e18-8162-b68d4a4eb2e3" alt=""><figcaption><p>An OVRMap inside an OVRLand</p></figcaption></figure>

<figure><img src="https://123660717-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F6xdubHTzJACGqFIM7yJy%2Fuploads%2FDXlsW04F7WWBOn1JggTx%2FEkran%20g%C3%B6r%C3%BCnt%C3%BCs%C3%BC%202024-10-24%20101122.png?alt=media&amp;token=13039c48-109a-44c3-b0ab-e53d22c81f80" alt=""><figcaption><p>The same OVRMap with a 3D cat placed on the table</p></figcaption></figure>

## How to use it

1. In the **Location** tab, find the **VPS - OVRMap** card and click **Select OVRMap**.
2. Choose the OVRMap in the **browser** page, then come back to Unity.
3. The first time, the SDK asks to **download** the OVRMap. Then it is added to the scene as **OVER\_OVRMap**, on the selected OVRLand (or at the scene origin if no OVRLand is in the scene).
4. Place your objects on the model, then align it as explained in [OVRMap Position](/over-sdk-manual/sdk-editor/location/ovrmap-editor-settings/ovrmap-setting.md).

{% hint style="warning" %}
OVRMaps need **Vulkan** as the Graphics API. If your project uses another one, the SDK asks to change it and **restart** Unity.
{% endhint %}

If you mapped an OVRLand where you cannot publish, you can still test the placement: publish on your **Staging OVRLand** and visit the mapped place.