OpenStreetMap
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Xapi Web Service - MapQuest Platform
Xapi (pronounced zappy) is a read-only OpenStreetMap (OSM) Extended API that provides enhanced search and querying capabilities for nodes, ways and relations. The query can be defined by OSM tags and/or a bounding box and will return all current data that match the entered search terms. Comments, feedback, and support questions can be posted in our Open Forums . Hello, World! Below is a simple example of a Xapi request to help further understand the service. An XML document containing the nodes that match the [key=value] pair within the bounding box will be returned.
Xapi
The OSM E x tended API (or xapi, pronounced zappy) is a read-only API protocol, based on a modified version of the OSM main API , that provides enhanced search and querying capabilities. It offers search queries for some common simple use cases and helps to put load off the main API. In particular, it reimplements the standard map request such that it can be performed much faster.This is an example of how you can use Mapnik , running on your own PC, to render a map using OpenStreetMap data. This example was generated on a Windows XP machine, set up in accordance with the instructions given on this Wiki. This example differs from most other Mapnik examples in that it only uses OpenStreetMap data and doesn't require you to set up of get hold of ESRI shape files . The example shows how to produce a map of Hampstead Heath.
Mapnik Example
Hillshading with Mapnik
Since I have been doing a decent amount of piste mapping this winter, I wanted to see my results rendered in a visually appealing way. For skiers, it is important to know whether you are going uphill or downhill, hence a piste map needs elevation data. Personally, I find hillshading more intuitive than contours - at the cost of absolute height information and, to an extent, precision, but I can live with that. Here's how I did it.
Mapnik is an open source toolkit for rendering maps. Among other things, it is used to render the four main Slippy Map layers on the OpenStreetMap website. It supports a variety of geospatial data formats and provides flexible styling options for designing many different kinds of maps.
