# Mapping Resources

<table data-view="cards"><thead><tr><th align="center"></th><th align="center"></th><th></th><th data-hidden data-card-target data-type="content-ref"></th><th data-hidden data-card-cover data-type="image">Cover image</th></tr></thead><tbody><tr><td align="center">Tile name derivation</td><td align="center">Mathematical relationships which can be used to derive tile names (ZXY and WMTS) from coordinates at a particular zoom level and vice-versa.</td><td></td><td><a href="https://github.com/OrdnanceSurvey/tile-name-derivation">https://github.com/OrdnanceSurvey/tile-name-derivation</a></td><td data-object-fit="cover" data-alt="map of a city"><a href="/files/rYd6nhRGSuUhxlGo1qls">/files/rYd6nhRGSuUhxlGo1qls</a></td></tr><tr><td align="center">OS Transform</td><td align="center">A set of JavaScript helper functions for transforming between the OSGB36/British National Grid (EPSG:27700) and WGS84 (EPSG:4326) coordinate systems; as well as providing support for OS Grid Reference conversions.</td><td></td><td><a href="https://github.com/OrdnanceSurvey/os-transform">https://github.com/OrdnanceSurvey/os-transform</a></td><td data-object-fit="cover" data-alt="GB Grid references image"><a href="/files/yxvYAfAPAuukNKPYNpJA">/files/yxvYAfAPAuukNKPYNpJA</a></td></tr><tr><td align="center">Postman GeoJSON plugin</td><td align="center">GeoJSON response viewer for Postman's Visualizer testing tool.</td><td></td><td><a href="https://github.com/OrdnanceSurvey/postmanGeoJSON">https://github.com/OrdnanceSurvey/postmanGeoJSON</a></td><td data-object-fit="cover" data-alt="Postman splash screen"><a href="/files/XJ85SD7GcM5kqU1NKN2t">/files/XJ85SD7GcM5kqU1NKN2t</a></td></tr><tr><td align="center">osbng: British National Grid References in Python</td><td align="center">Python package supporting geospatial grid indexing and interaction with Ordnance Survey's British National Grid index system.</td><td></td><td><a href="https://github.com/OrdnanceSurvey/osbng-py">https://github.com/OrdnanceSurvey/osbng-py</a></td><td data-object-fit="cover" data-alt="Image of British National Grid"><a href="/files/DjFPn99U0UvN8D9imeE2">/files/DjFPn99U0UvN8D9imeE2</a></td></tr><tr><td align="center">osbng: British National Grid References in R</td><td align="center">R package supporting geospatial grid indexing and interaction with Ordnance Survey's British National Grid index system.</td><td></td><td><a href="https://github.com/OrdnanceSurvey/osbng-r">https://github.com/OrdnanceSurvey/osbng-r</a></td><td data-object-fit="cover" data-alt="Image of British National Grid"><a href="/files/DjFPn99U0UvN8D9imeE2">/files/DjFPn99U0UvN8D9imeE2</a></td></tr><tr><td align="center">osbng-grids: OS British National Grids</td><td align="center">Grid datasets providing boundaries and identifiers for the Ordnance Survey British National Grid index system at multiple spatial resolutions.</td><td></td><td><a href="https://github.com/OrdnanceSurvey/osbng-grids">https://github.com/OrdnanceSurvey/osbng-grids</a></td><td data-object-fit="cover" data-alt="Image of British National Grid styled"><a href="/files/ir4kiDGvkeD6xcz7fVDC">/files/ir4kiDGvkeD6xcz7fVDC</a></td></tr></tbody></table>


---

# 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/more-than-maps/resources/mapping-resources.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.