Click here to see the SAS code.
Click here to see the example.
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Someone had posted some maps on 'flowingdata.com' showing the
major airline routes. Two separate people both forwarded it to me,
and said I should do a SAS/Graph version.
http://flowingdata.com/2011/05/05/where-do-major-airlines-fly-in-the-united-states/
Well, here it is - the SAS/Graph version! :)
airline_flights.htm
And, with a little help from Rick Wicklin, who used SAS/IML
to call the R routines that were used to create the flowingdata
map, and calculate points 50 points along the path from each
airport source->destination, we get an even more accurate
version, in which the lines curve like they should (assuming
the shortest distance between 2 points is the Great Circel
line between them), we get:
great_circle_DL.htm (using R 'great circle' functions)
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