.. _example_flight_graph: Flight graph example -------------------------------------------------------------------- An example showing a graph display between cities positionned on the Earth surface. This graph displays the longest fligh routes operated by Boing 777. The two main interests of this example are that it shows how to build a graph of arbitrary connectivity, and that it shows how to position data on the surface of the Earth. The graph is created by first building a scalar scatter dataset with the mlab.points3d command, and adding line information to it. One of the difficulties is that the lines are specified using the indexing number of the points, so we must 'massage' our data when loading it. A similar technique to plot the graph is done in the :ref:`example_protein`. Another example of graph plotting, showing a different technique to plot the graph, can be seen on :ref:`example_delaunay_graph`. To simplify things we do not plot the connection on the surface of the Earth, but as straight lines going throught the Earth. As a result must use transparency to show the connection. Data source: http://www.777fleetpage.com/777fleetpage3.htm .. image:: ../generated_images/example_flight_graph.jpg :align: center **Python source code:** :download:`flight_graph.py` .. literalinclude:: flight_graph.py :lines: 24-