> For the complete documentation index, see [llms.txt](https://docs.os.uk/more-than-maps/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.os.uk/more-than-maps/advanced-applications/os-ngd-data-in-dashboards/os-power-bi-map-visual/os-power-bi-map-visual-getting-started-guide/adding-data-to-the-map.md).

# Adding data to the map

## Core concepts

The visual allows you to add up to three layers to the map at once, which can be styled and symbolised separately. There is a marker points layer, a features layer, and a reference layer.

The **marker points** layer can contain point-based data from your Power BI data model, which can be supplied either as coordinates, postcodes, or Unique Property Reference Numbers (UPRNs).

The **features layer** can contain point, line, or polygon data which can be supplied in one of three ways: directly from your data model as WKT or GeoJSON; geocoded from Government Statistical Service (GSS) codes in your data model; or matched from a column in your data to features in a spatial dataset that you can upload into the visual.

Finally the **reference layer** can contain reference data such as administrative boundaries which are geocoded from GSS codes but are not matched to any specific data from your data model.

## Creating and styling map layers

The pages below include detailed guides on creating and styling a point map within the visual:

* [Creating a point map](/more-than-maps/advanced-applications/os-ngd-data-in-dashboards/os-power-bi-map-visual/os-power-bi-map-visual-getting-started-guide/adding-data-to-the-map/creating-a-point-map.md)
* [Styling points on the map](/more-than-maps/advanced-applications/os-ngd-data-in-dashboards/os-power-bi-map-visual/os-power-bi-map-visual-getting-started-guide/adding-data-to-the-map/styling-points-on-the-map.md)
* [Creating a map with polygons or other features](/more-than-maps/advanced-applications/os-ngd-data-in-dashboards/os-power-bi-map-visual/os-power-bi-map-visual-getting-started-guide/adding-data-to-the-map/creating-a-map-with-polygons-or-other-features.md)
* [Styling features on the map](/more-than-maps/advanced-applications/os-ngd-data-in-dashboards/os-power-bi-map-visual/os-power-bi-map-visual-getting-started-guide/adding-data-to-the-map/styling-features-on-the-map.md)


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