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SYNTHESYS NA-D
The EU synthesis of systematic resources

EDIT WP5
The European Distributed Institute of Taxonomy

RMCA
The Royal Museum for Central Africa

ItinTool demo result

What to expect

The ItinTool currently gives back :

1. a PostGreSQL/PostGIS table with your data points, served through WMS
2. a KML rendering of your data points
3. a CSV rendering of your data points
4. a KML rendering of the lines connecting your points
5. an RDP-algorithm simplification of your dataset (points), as KML
6. an RDP-algorithm simplification of your dataset (lines), as KML
7. an RDP-algorithm simplification of your dataset (points), as CSV
8. all the above KML layers, served through WMS and visualised through the OpenLayers application.

Planned for the near future :

1. a (Dijkstra) shortest path route through your data points, as KML
2. a CSV file containing the distance matrix for your data points
3. PostGreSQL/PostGIS tables for the connecting lines between the data points, served through WMS
4. interactive adaptation of algorithm parameters

All this is headed for :

1. a full overview of the data set, available in many different standard formats
2. various interpretations of the dataset (e.g. Dijkstra shortest path, Ramen-Douglas-Peucker line simplification,...), visualised through WMS and other standards.
3. eventually : different visualisations offered to the human expert, for picking out the most probable itinerary pathway.

Interpretation example

An example of data point interpretation is given here : input was a 1500+ waypoint .gpx file downloaded directly from a GPS device. The waypoints were registered at 5 second intervals on an agreeable sunday afternoon walk near Leuven (Belgium).

An overview of all data points. With over 1500 data points, things get a bit crowded.
The full pathway, joining all data points.
The key points of the pathway (yellow), as detected by the the RDP algorithm for polyline simplification.
The simplified pathway, connecting only the key points yellow).
Comparison of the full pathway and simplified pathway.

Remark that the treshold parameter for the simplification algorithm could be set to folow more closely the data path : this will be an important subject of further testing efforts.