Moving Objects and KML Files

Although KML files can be used to describe journeys, there is not a standard way to represent them as moving object trajectories for further analysis. In the KML schema, there is not a predefined element to describe a moving object trajectory. Each software or mobile device that generates KML files with trajectories uses its own structure for representing them. Therefore, this work proposes an interoperable way to extract moving object trajectories from any KML file, based on the processing of an additional metadata file. This metadata file is an XML that must be compliant with an XML schema proposed in this paper. This proposal has been implemented in a geographical software library as a proof of concept.