Trajectory visualisation.

Usage:

1. start http server: $ python server.py
2. access localhost:1080 using your favourite browser
3. click a Marker to set the start POI
4. slide to chose the preferred length (i.e., the number of POIs in trajectory)
5. select the travel mode (used for rendering routes only)
6. click the Recommend button

Note:

• the required python version to load the trained model is 3.5.3, other versions of python will cause "bad magic number" error.
• the required pandas version is 0.19.2, other versions may cause "import error".
• only top-2 recommended trajectories are rendered.