Doris Silbernagl

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Using data from OpenStreetMap and information about the public transportation the tool “osmPti2mmds” presented in this paper creates datasets that can be used to carry out multimodal analyses. As part of this process GTFS or VDV452 archive files are linked to data from OpenStreetMap in such a way that multimodal routing and reachability analyses are(More)
Routing is a common task when using digital maps, but most engines offer only travel routes for automobiles. However, a more interesting aspect in this topic arises when being a cyclist. For this target audience especially elevation information is relevant. Such data is available from different sources, but is not perfectly usable for cycling routing. Those(More)
Routing engines offer various algorithms to find the shortest or fastest path from point A to point B. Most of them are designed to find best paths for automobiles. Searching for a path as a cyclist has often very disappointing results. The main problem is that currently available routers do neither consider elevation or nor support profile aware routing.(More)
This paper describes a new method to compute isochrones in multimodal spatial networks, which aims at finding a good trade-off between memory usage and runtime. In the past, approaches based on Dijkstra's algorithm have been proposed. For small networks, the entire network is first loaded in main memory, where the network is expanded to determine the(More)
OpenStreetMap (OSM) is a well known and widely used data source for geographic data. This kind of data can also be found in Wikipedia in the form of geographic locations, such as cities or countries. Next to the geographic coordinates, also statistical data about the area of these elements can be present. Since it is possible to extract these data from(More)
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