Movement data in GIS #10 : open tools for AIS tracks from MarineCadastre.gov

#Movement data in GIS 10: open tools for #AIS tracks from MarineCadastre.gov
▻https://anitagraser.com/2017/10/28/movement-data-in-gis-10-open-tools-for-ais-tracks-from-marinecadastre-g

MarineCadastre.gov is a great source for AIS data along the US coast.

One of the advantages of creating trajectory lines is that they render many times faster than the original points.

https://underdark.files.wordpress.com/2017/10/ais_trajectories.png

With the trajectories ready, we can go ahead and start exploring the dataset. For example, we can visualize trajectory speed and/or create animations:

https://underdark.files.wordpress.com/2017/10/ais_vessel.gif

We can also perform trajectory analysis, such as trajectory generalization:

https://underdark.files.wordpress.com/2017/10/ais_flows.png

#map #QGIS