> For the complete documentation index, see [llms.txt](https://geolytix.gitbook.io/xyz-developer-guide/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://geolytix.gitbook.io/xyz-developer-guide/workspaces/infoj.md).

# Locations

Locations are geographic features on a layer which can be interacted with. An optional query ID (qID) field must be set in the layer definition in order to select locations. **Only MVT, Cluster, and GeoJSON layer can have locations.**

An infoJ field array describes the location properties and whether these can be [**edited**](/xyz-developer-guide/workspaces/editing.md).

The infoJ is used to query as well as calculate property values from the XYZ backend.

infoJ entries and their values are presented in the info panel of a location.

![](https://1429262937-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LMms4_qYZAl-8nd6vhU%2F-LQdlfUfSYydNMlGOpbI%2F-LQe2Eu3A2URPD4anHc-%2Fimage.png?alt=media\&token=48dd90f6-1d0b-4e55-a786-a1a79dd63aea)