{ "metadata": { "name": "", "signature": "sha256:6c259f26df9b226a2c7d943b898882cd537398f70e9abc2ef4bf25d5ade24ea6" }, "nbformat": 3, "nbformat_minor": 0, "worksheets": [ { "cells": [ { "cell_type": "markdown", "metadata": {}, "source": [ "## Plotting WMTS tiles with Cartopy ##" ] }, { "cell_type": "markdown", "metadata": {}, "source": [ "### Introduction ###\n", "\n", "WMTS (Web Map Tile Service) is an OGC (Open Geospatial Consortium) standard for requesting geo-located map tiles over HTTP. The OGC provide [overview documents](http://www.opengeospatial.org/standards/wmts) of the WMTS standard.\n", "\n", "A WMTS request to a WMTS server contains layer (a map layer containing a given geographic phenomenon) and area of interest information. The information in the request defines the response from the WMTS server to which the request was made. The response is composed of geo-located map tiles that can be displayed by the application making the request.\n", "\n", "The map tiles in a WMTS response are raster images, typically provided in `PNG` or `JPEG` format. Increased detail is available at higher zoom levels through a tree structure of tiles. Tiles are laid out in an `(x, y)` grid to cover the spatial extent of the data with a `z` axis for increased zoom levels.\n", "\n", "An important part of OGC standards services is the get capabilities request. This returns an XML document that specifies the capabilities (metadata) about the service. Information included in the get capabilities response includes:\n", "\n", "