Concept

Idea

Preselected Rendering aims to render maps based on a variety of data. The basic principle is that Mapnik is used to create maps in the old OSM-Style. The only difference is the data source. This project can filter through a bunch of Geo objects and select only those that are conform with the filter.

The project came to life within the OpenHistoricalDataMap project which aims to provide a website that displays maps from current time as well as historic maps.

To achieve this, Preselected Rendering is able to take a time parameter (a date), fetch all of the map data from a data source (e.g. a PostgreSQL database) that are valid on the given day and render a map for the given time.