Mapping

Tile name derivation

Mathematical relationships which can be used to derive tile names (ZXY and WMTS) from coordinates at a particular zoom level and vice-versa.

OS Transform

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.

Postman GeoJSON plugin

GeoJSON response viewer for Postman's Visualizer testing tool.

OS British National Grids

A free set of grids at various resolutions for Ordnance Survey’s National Grid.