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The following KB should provide you with some insight:
Hope this helps!
I noticed your post on using path shelf pattern analysis which is great. This goes a long way to solving my viz problem but I was wondering if it were also possible to get Tableau to plot a curved rather than a straight line between 2 points, where the curve inreases in concavity when the plot occurs more than once over time - this way, multiple flights to and from the same origin and destination for a day can be seen as separate instances with their own metrics (E.g. be able to distinguish between a big and small plane on the same route at different times of the day for instance.) I am using the play button to build up the flight metrics over the course of a day but many of the flights are getting lost.
Any insights would be appreciated!
I don't believe there is currently a way to make the lines curved. This sounds like a great one for the Ideas section though!
Thank you for the article as I'm certain I will be able to use this in the future. Accoring to the implemented data solution, the data must be architected in a normalized fashion. For some extremely large data sets where I have summary tables of source,destination,metric this would require 2n rows.
fyi..I do network maps like this that run in the neighborhood of 400,000+ records(rows) via a live-link to excel and it seems to work fine.
One nice touch in a map like this is to do a dual axis map with a filled map of some other attribute of interest in the background.