> For the complete documentation index, see [llms.txt](https://docs.jakarto.com/guide-jakartowns/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.jakarto.com/guide-jakartowns/en/getting-started-with-jakartowns/interface/informations-sur-les-donnees.md).

# Data Information

<figure><img src="https://4125772431-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FP8V5DV7IBnVaRHIDMd6N%2Fuploads%2Fpa8oduTFg5CuxbOrhI77%2Fjkt-detailed-en.png?alt=media&amp;token=bf91ec26-b3c3-4132-b06d-d044904832ab" alt="Jakartowns interface overview"><figcaption></figcaption></figure>

Displayed below the 2D map, this information gives details on the data currently being viewed:

* 3D precision of the data. [Learn more about data quality.](/guide-jakartowns/en/viewing-data/qualite-des-donnees.md)
* Projection system.
* Altimetric reference system.

By default, data is displayed using the most appropriate projection system and altimetric reference system. You can select a different projection system or altimetric reference system if you prefer.

> \[!INFO] If the precision of the displayed data is below [Jakarto's standards](/guide-jakartowns/en/viewing-data/qualite-des-donnees.md), a red banner will appear at the top of the screen to warn you.