# Styling OS NGD Data

## OS Select+Build and OS NGD API – Features

You can choose from a range of contextual or analytical styles to visualise OS NGD data.

Four **cartographic styles** – Outdoor, Road, Light, and Black & White – are available to give the data a cartographic appearance:

**Analytical styles** can be used to colour OS NGD data by theme and collection to support data visualisation:

{% hint style="info" %}

### Tutorial on downloading and using OS stylesheets

A useful tutorial on '[How to download and use OS stylesheets](https://docs.os.uk/more-than-maps/geographic-data-visualisation/geodataviz-assets/stylesheets/how-to-download-and-use-os-stylesheets)' is available on our ['More Than Maps' site](https://docs.os.uk/more-than-maps) (a self-serve platform that provides a one-stop shop for all your OS technical geospatial support, including tutorials, demonstrators and case studies).
{% endhint %}

## OS NGD API – Tiles

If you are using OS NGD API – Tiles, all the styling resources, including JSON files and sprites, are hosted within the [vector tiles endpoint](https://api.os.uk/maps/vector/ngd/ota/v1/).

You can now create your own custom style for OS NGD API – Tiles; please see the Creating a custom style for OS NGD API – Tiles page for a guide on how to do this.


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.os.uk/os-apis/core-concepts/styling-os-ngd-data.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.