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No, the problem is that Street A and Street A2 don't always have the same name. So southbound might have streets Ash at 123.3 Oak at 123.8 Main at 124.5 And northbound may have streets Brown at 123.1 Green at 123.5 Pink at 124.2 The client wants to see an x-axis with labels in the order: Brown, Ash,...

We have been using jfreechart for many years for simple charting. In our old charts, we have been charting the speed one direction down a roadway by cross street. ie, the data we have been using would be: Street A, mile marker 123.3, speed 10 Street B, mile marker 123.8, speed 11 Street C, mile mark...